Bihar Board Class 10 Mathematics Question Paper 2025 (Code 110 Set-F) Available- Download Here with Solution PDF

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Shivam Yadav

Updated on - Nov 24, 2025

Bihar Board Class 10 Mathematics Question Paper 2025 PDF (Code 110 Set-F) is available for download here. The Mathematics exam was conducted on February 18, 2025 in the Morning Shift from 9:30 AM to 12:15 PM and in the Evening Shift from 2:00 PM to 5:15 PM. The total marks for the theory paper are 100. Students reported the paper to be easy to moderate.

Bihar Board Class 10 Mathematics Question Paper 2025 (Code 110 Set-F) with Solutions

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Bihar Board Class 10 Mathematics 2025 Question Paper with Solutions

Question 1:

\(\sin(90^\circ - A) = \)?

  • (A) sin A
  • (B) cos A
  • (C) tan A
  • (D) sec A

Question 2:

If \(\alpha = \beta = 60^\circ\), then the value of \(\cos(\alpha - \beta)\) is?

  • (A) \(\frac{1}{2}\)
  • (B) 1
  • (C) 0
  • (D) 2

Question 3:

If \(\theta = 45^\circ\), then the value of \(\sin \theta + \cos \theta\) is?

  • (A) \(\frac{1}{\sqrt{2}}\)
  • (B) \(\sqrt{2}\)
  • (C) \(\frac{1}{2}\)
  • (D) 1

Question 4:

If \( A = 30^\circ \), then the value of \( \frac{2 \tan A}{1 - \tan^2 A} \) is:

  • (A) \( 2 \tan 30^\circ \)
  • (B) \( \tan 60^\circ \)
  • (C) \( 2 \tan 60^\circ \)
  • (D) \( \tan 30^\circ \)

Question 5:

If \( \tan \theta = \frac{12}{5} \), then the value of \( \sin \theta \) is:

  • (A) \( \frac{5}{12} \)
  • (B) \( \frac{12}{13} \)
  • (C) \( \frac{5}{13} \)
  • (D) \( \frac{12}{5} \)

Question 6:

If \( \theta = 31^\circ \), \( \cos 59^\circ \), \( \tan 80^\circ \), \( \sin 31^\circ \), and \( \cot 10^\circ \) are involved, then the value of the expression is:

  • (A) \( \frac{1}{\sqrt{2}} \)
  • (B) 1
  • (C) \( \frac{\sqrt{3}}{2} \)
  • (D) \( \frac{1}{2} \)

Question 7:

If \( \tan 25^\circ \times \tan 65^\circ = \sin A \), then the value of \( A \) is:

  • (A) \( 25^\circ \)
  • (B) \( 65^\circ \)
  • (C) \( 90^\circ \)
  • (D) \( 45^\circ \)

Question 8:

If \( \cos \theta = x \), then \( \tan \theta \) is:

  • (A) \( \frac{\sqrt{1 + x^2}}{x} \)
  • (B) \( \frac{\sqrt{1 - x^2}}{x} \)
  • (C) \( \frac{\sqrt{1 - x^2}}{x} \)
  • (D) \( \frac{x}{\sqrt{1 - x^2}} \)

Question 9:

\text{Simplify (1 - \cos^4 \theta)


Question 10:

What is the form of a point lying on the y-axis?

  • (A) \((y, 0)\)
  • (B) \((2, y)\)
  • (C) \((0, x)\)
  • (D) None of these

Question 11:

For what value of \(k\), roots of the quadratic equation \(kx^2 - 6x + 1 = 0\) are real and equal?

  • (A) 6
  • (B) 8
  • (C) 9
  • (D) 10

Question 12:

If one of the zeros of the polynomial \(p(x)\) is 2, then which of the following is a factor of \(p(x)\)?

  • (A) \(x - 2\)
  • (B) \(x + 2\)
  • (C) \(x - 1\)
  • (D) \(x + 1\)

Question 13:

If \(a\) and \(b\) are the zeros of the polynomial \(cx^2 + ax + b\), then the value of \(a \cdot b\) is?

  • (A) \(\frac{a}{c}\)
  • (B) \(- \frac{a}{c}\)
  • (C) \(\frac{b}{c}\)
  • (D) \(- \frac{b}{c}\)

Question 14:

Which of the following is a quadratic equation?

  • (A) \((x + 3)(x - 3) = x^2 - 4x^3\)
  • (B) \((x + 3)^2 = 4(x + 4)\)
  • (C) \((2x - 2)^2 = 4x^2 + 7\)
  • (D) \(4x + \frac{1}{4x} = 4x\)

Question 15:

Which of the following is not a quadratic equation?

  • (A) \(5x - x^2 = x^2 + 3\)
  • (B) \(x^3 - x^2(x - 1)^3\)
  • (C) \((x + 3)^2 = 3(x^2 - 5)\)
  • (D) \(\sqrt{2x + 3} = 2x^2 + 5\)

Question 16:

The discriminant of the quadratic equation \(2x^2 - 7x + 6 = 0\) is?

  • (A) 1
  • (B) -1
  • (C) 27
  • (D) 37

Question 17:

Which of the following points lies on the graph of \(x - 2 = 0\)?

  • (A) \((2, 0)\)
  • (B) \((2, 1)\)
  • (C) \((2, 2)\)
  • (D) All of these

Question 18:

If \(P + 1\), \(2P + 1\), \(4P - 1\) are in A.P., then the value of \(P\) is?

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4

Question 19:

The common difference of arithmetic progression \(1, 5, 9, \dots\) is?

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 5

Question 20:

Which term of the A.P. \(5, 8, 11, 14, \dots\) is 38?

  • (A) 10th
  • (B) 11th
  • (C) 12th
  • (D) 13th

Question 21:

If \(A(0, 1)\), \(B(0, 5)\), and \(C(3, 4)\) are the vertices of any triangle \(ABC\), then the area of triangle \(ABC\) is?

  • (A) 16
  • (B) 12
  • (C) 6
  • (D) 4

Question 22:

\(\tan 10^\circ \cdot \tan 23^\circ \cdot \tan 80^\circ \cdot \tan 67^\circ = ?\)

  • (A) 0
  • (B) 1
  • (C) \(\sqrt{3}\)
  • (D) \(\frac{1}{\sqrt{3}}\)

Question 23:

If the ratio of areas of two similar triangles is 100:144, then the ratio of their corresponding sides is?

  • (A) 10:8
  • (B) 12:10
  • (C) 10:12
  • (D) 10:13

Question 24:

A line which intersects a circle in two distinct points is called?

  • (A) Chord
  • (B) Secant
  • (C) Tangent
  • (D) None of these

Question 25:

The corresponding sides of two similar triangles are in the ratio 4:9. What will be the ratio of the areas of the triangles?

  • (A) 9:4
  • (B) 81:16
  • (C) 16:81
  • (D) 2:3

Question 26:

If the area of triangle \(ABC\) is 54 cm², and triangle \(DEF\) is similar to triangle \(ABC\), with \(BC = 3\) cm, \(EF = 4\) cm, then the area of triangle \(DEF\) is?

  • (A) 56 cm²
  • (B) 96 cm²
  • (C) 196 cm²
  • (D) 49 cm²

Question 27:

In any triangle \(ABC\), if \(\angle A = 90^\circ\), \(BC = 13\) cm, \(AB = 12\) cm, then the value of \(AC\) is?

  • (A) 3 cm
  • (B) 4 cm
  • (C) 5 cm
  • (D) 6 cm

Question 28:

In triangle \(DEF\) and triangle \(PQR\), it is given that \(\angle LD = \angle LQ\) and \(\angle LR = \angle LE\), then which of the following is correct?

  • (A) \(LF = LP\)
  • (B) \(LF = LO\)
  • (C) \(LD = LP\)
  • (D) \(LE = LP\)

Question 29:

If \(\triangle ABC\) and \(\triangle DEF\) are such that \(\frac{AB}{DE} = \frac{BC}{EF} = \frac{CA}{DF}\) and \(\angle A = 40^\circ\), \(\angle B = 80^\circ\), then the measure of \(\angle F\) is?

  • (A) 30°
  • (B) 45°
  • (C) 60°
  • (D) 40°

Question 30:

The number of common tangents of two intersecting circles is?

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) infinitely many

Question 31:

The ratio of the volumes of two spheres is 64:125. Then the ratio of their surface areas is?

  • (A) 25:8
  • (B) 25:16
  • (C) 16:25
  • (D) none of these

Question 32:

The radii of two cylinders are in the ratio 4:5 and their heights are in the ratio 6:7. Then the ratio of their volumes is?

  • (A) 96:125
  • (B) 96:175
  • (C) 175:96
  • (D) 20:63

Question 33:

What is the total surface area of a hemisphere of radius \(R\)?

  • (A) \(\pi r^2\)
  • (B) \(2\pi r^2\)
  • (C) \(3\pi r^2\)
  • (D) \(4\pi r^2\)

Question 34:

If the curved surface area of a cone is 880 cm² and its radius is 14 cm, then its slant height is?

  • (A) 10 cm
  • (B) 20 cm
  • (C) 40 cm
  • (D) 30 cm

Question 35:

If the length of the diagonal of a cube is \( \frac{2}{\sqrt{3}} \) cm, then the length of its edge is?

  • (A) 2 cm
  • (B) \( \frac{2}{\sqrt{3}} \) cm
  • (C) 3 cm
  • (D) 4 cm

Question 36:

If the edge of a cube is doubled, then the total surface area will become how many times of the previous total surface area?

  • (A) Two times
  • (B) Four times
  • (C) Six times
  • (D) Twelve times

Question 37:

The ratio of the total surface area of a sphere and that of a hemisphere having the same radius is?

  • (A) 2:1
  • (B) 4:9
  • (C) 3:2
  • (D) 4:3

Question 38:

If the curved surface area of a hemisphere is 1232 cm², then its radius is?

  • (A) 7 cm
  • (B) 14 cm
  • (C) 21 cm
  • (D) 28 cm

Question 39:

If \( \cos 0^\circ + \cos^2 0 = 1 \), then the value of \( \sin^2 \theta + \sin^4 \theta \) is?

  • (A) -1
  • (B) 1
  • (C) 0
  • (D) 2

Question 40:

What is the value of \( \frac{1 + \tan^2 A}{1 + \cot^2 A} \)?

  • (A) \( \sec^2 A \)
  • (B) 1
  • (C) \( \cot^2 A \)
  • (D) \( \tan^2 A \)

Question 41:

Which of the following fractions has a terminating decimal expansion?

  • (A) \( \frac{14}{20 \times 3^2} \)
  • (B) \( \frac{9}{5 \times 7^2} \)
  • (C) \( \frac{8}{2^2 \times 3^2} \)
  • (D) \( \frac{15}{2^2 \times 5^3} \)

Question 42:

In the form of \( \frac{p}{2^n \times 5^m} \), \(0.505\) can be written as?

  • (A) \( \frac{101}{2^1 \times 5^2} \)
  • (B) \( \frac{101}{2^1 \times 5^3} \)
  • (C) \( \frac{101}{2^2 \times 5^2} \)
  • (D) \( \frac{101}{2^3 \times 5^3} \)

Question 43:

If in the division algorithm \( a = bq + r \), \( b = 4 \), \( q = 5 \) and \( r = 1 \), then what is the value of \( a \)?

  • (A) 20
  • (B) 21
  • (C) 25
  • (D) 31

Question 44:

The zeroes of the polynomial \(2x^2 - 4x - 6\) are?

  • (A) 1, 3
  • (B) -1, 3
  • (C) 1, -3
  • (D) -1, -3

Question 45:

The degree of the polynomial \( (x^3 + x^2 + 2x + 1)(x^2 + 2x + 1) \) is?

  • (A) 3
  • (B) 4
  • (C) 5
  • (D) 6

Question 46:

Which of the following is not a polynomial?

  • (A) \( x^2 - 7 \)
  • (B) \( 2x^2 + 7x + 6 \)
  • (C) \( \frac{1}{2}x^2 + \frac{1}{2}x + 4 \)
  • (D) \( \frac{4}{x} \)

Question 47:

Which of the following quadratic polynomials has zeroes 2 and -2?

  • (A) \( x^2 + 4 \)
  • (B) \( x^2 - 4 \)
  • (C) \( x^2 - 2x + 4 \)
  • (D) \( x^2 + \sqrt{5} \)

Question 48:

If \( \alpha \) and \( \beta \) are the zeroes of the polynomial \( x^2 + 7x + 10 \), then the value of \( \alpha + \beta \) is?

  • (A) 7
  • (B) 10
  • (C) -7
  • (D) -10

Question 49:

Find the value of \( (\sin 30^\circ + \cos 30^\circ) - (\sin 60^\circ + \cos 60^\circ) \).

  • (A) -1
  • (B) 0
  • (C) 1
  • (D) 2

Question 50:

If one zero of the quadratic polynomial \( (k-1)x^2 + kx + 1 \) is -4, then the value of \( k \) is?

  • (A) \( \frac{-5}{4} \)
  • (B) \( \frac{5}{4} \)
  • (C) \( \frac{-3}{4} \)
  • (D) \( \frac{3}{4} \)

Question 51:

From an external point P, two tangents PA and PB are drawn on a circle. If PA = 8 cm then PB =

  • (A) 6 cm
  • (B) 8 cm
  • (C) 12 cm
  • (D) 16 cm

Question 52:

If PA and PB are the tangents drawn from an external point P to a circle with centre at O and \(\angle APB = 80^\circ\), then \(\angle POA\) =

  • (A) 40°
  • (B) 50°
  • (C) 80°
  • (D) 60°

Question 53:

What is the angle between the tangent drawn at any point of a circle and the radius passing through the point of contact?

  • (A) 30°
  • (B) 45°
  • (C) 60°
  • (D) 90°

Question 54:

The ratio of the radii of two circles is 3 : 4; then the ratio of their areas is

  • (A) 3 : 4
  • (B) 4 : 3
  • (C) 9 : 16
  • (D) 16 : 9

Question 55:

The area of the sector of a circle of radius 42 cm and central angle 30° is

  • (A) 515 cm²
  • (B) 416 cm²
  • (C) 462 cm²
  • (D) 406 cm²

Question 56:

The ratio of the circumferences of two circles is 5 : 7; then the ratio of their radii is

  • (A) 7 : 5
  • (B) 5 : 7
  • (C) 25 : 49
  • (D) 49 : 25

Question 57:

\(\sec^2 A - 7 \tan^2 A = ?\)

  • (A) 49
  • (B) 7
  • (C) 14
  • (D) 0

Question 58:

If \(x = a \cos \theta\) and \(y = b \sin \theta\), then \(b^2 x^2 + a^2 y^2 = ?\)

  • (A) \(a^2 b^2\)
  • (B) \(ab\)
  • (C) \(a^4 b^4\)
  • (D) \(a^2 + b^2\)

Question 59:

The angle of elevation of the top of a tower at a distance of 10 m from its base is 60°; then the height of the tower is

  • (A) 10 m
  • (B) \(10 \sqrt{3}\) m
  • (C) \(15 \sqrt{3}\) m
  • (D) \(20 \sqrt{3}\) m

Question 60:

A kite is at a height of 30 m from the earth and its string makes an angle 60° with the earth. Then the length of the string is

  • (A) \(30 \sqrt{3}\) m
  • (B) \(35 \sqrt{3}\) m
  • (C) \(20 \sqrt{3}\) m
  • (D) \(45 \sqrt{3}\) m

Question 61:

If 5th term of an A.P. is 11 and the common difference is 2, then what is its first term?

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4

Question 62:

The sum of an A.P. with \(n\) terms is \(n^2 + 2n + 1\); then its 6th term is

  • (A) 29
  • (B) 19
  • (C) 15
  • (D) None of these

Question 63:

Which of the following is in an A.P.?

  • (A) \(1, 7, 9, 16, \ldots\)
  • (B) \(x^2, x^3, x^4, x^5, \ldots\)
  • (C) \(x, 2x, 3x, 4x, \ldots\)
  • (D) \(2^2, 4^2, 6^2, 8^2, \ldots\)

Question 64:

Which of the following is not in an A.P.?

  • (A) \(1, 2, 3, 4, \ldots\)
  • (B) \(3, 6, 9, 12, \ldots\)
  • (C) \(2, 4, 6, 8, \ldots\)
  • (D) \(2^2, 4^2, 6^2, 8^2, \ldots\)

Question 65:

The sum of first 20 terms of the A.P. \(1, 4, 7, 10, \ldots\) is

  • (A) 500
  • (B) 540
  • (C) 590
  • (D) 690

Question 66:

Which of the following values is equal to 1?

  • (A) \(\sin^2 60^\circ + \cos^2 60^\circ\)
  • (B) \(\sin 90^\circ \times \cos 90^\circ\)
  • (C) \(\sin^2 60^\circ\)
  • (D) \(\sin 45^\circ \times \cos 45^\circ\)

Question 67:

\(\cos^2 A + \tan^2 A = ?\)

  • (A) \(\sin^2 A\)
  • (B) \(\csc^2 A\)
  • (C) 1
  • (D) \(\tan^2 A\)

Question 68:

\(\tan 30^\circ = ?\)

  • (A) \(\frac{\sqrt{3}}{2}\)
  • (B) \(\frac{1}{\sqrt{3}}\)
  • (C) \(\frac{1}{3}\)
  • (D) 1

Question 69:

\(\cos 60^\circ = ?\)

  • (A) \(\frac{1}{\sqrt{3}}\)
  • (B) \(\frac{\sqrt{3}}{2}\)
  • (C) \(\frac{1}{2}\)
  • (D) 1

Question 70:

\(\sin 90^\circ - \tan^2 45^\circ = ?\)

  • (A) 1
  • (B) \(\frac{1}{2}\)
  • (C) \(\frac{1}{\sqrt{2}}\)
  • (D) 0

Question 71:

Which of the following quadratic polynomials has zeroes 3 and -10?

  • (A) \(x^2 + 7x - 30\)
  • (B) \(x^2 - 7x - 30\)
  • (C) \(x^2 + 7x + 30\)
  • (D) \(x^2 - 7x + 30\)

Question 72:

If the sum of zeroes of a quadratic polynomial is 3 and their product is -2, then the quadratic polynomial is:

  • (A) \(x^2 - 3x - 2\)
  • (B) \(x^2 - 3x + 3\)
  • (C) \(x^2 + 2x + 3\)
  • (D) \(x^2 + 3x - 2\)

Question 73:

If \( p(x) = x^4 - 2x^3 + 17x^2 - 4x + 30 \) and \( q(x) = x + 2 \), then the degree of the quotient is

  • (A) 6
  • (B) 3
  • (C) 4
  • (D) 5

Question 74:

How many solutions will \(x + 2y + 3 = 0\) and \(3x + 6y + 9 = 0\) have?

  • (A) One solution
  • (B) No solution
  • (C) Infinitely many solutions
  • (D) None of these

Question 75:

If the graphs of two linear equations are parallel, then the number of solutions will be

  • (A) 1
  • (B) 2
  • (C) infinitely many
  • (D) none of these

Question 76:

The pair of linear equations \(5x - 4y + 8 = 0\) and \(7x + 6y - 9 = 0\) is

  • (A) consistent
  • (B) inconsistent
  • (C) dependent
  • (D) none of these

Question 77:

If \(\alpha\) and \(\beta\) are roots of the quadratic equation \(3x^2 - 5x + 2 = 0\), then the value of \(\alpha^2 + \beta^2\) is

  • (A) \(\frac{13}{9}\)
  • (B) \(\frac{9}{13}\)
  • (C) \(\frac{5}{3}\)
  • (D) \(\frac{3}{5}\)

Question 78:

If one root of the quadratic equation \(2x^2 - 7x - p = 0\) is 2, then the value of \(p\) is

  • (A) 4
  • (B) -4
  • (C) -6
  • (D) 6

Question 79:

If one root of the quadratic equation \(2x^2 - x - 6 = 0\) is \(-\frac{3}{2}\), then the another root is

  • (A) -2
  • (B) 2
  • (C) \(\frac{3}{2}\)
  • (D) 3

Question 80:

What is the nature of the roots of the quadratic equation \(2x^2 - 6x + 3 = 0\)?

  • (A) real and unequal
  • (B) real and equal
  • (C) not real
  • (D) none of these

Question 81:

The length of the class intervals of the classes, \(2 - 5, 5 - 8, 8 - 11, \dots\), is

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 3.5

Question 82:

If the mean of four consecutive odd numbers is 6, then the largest number is

  • (A) 4-5
  • (B) 9
  • (C) 21
  • (D) 15

Question 83:

The mean of the first 6 even natural numbers is

  • (A) 4
  • (B) 6
  • (C) 7
  • (D) none of these

Question 84:

\(1 - \cos^2 \theta = ?\)

  • (A) \(\sin^2 \theta\)
  • (B) \(\cos^2 \theta\)
  • (C) \(\tan^2 \theta\)
  • (D) \(\sec^2 \theta\)

Question 85:

The mode of \(8, 7, 9, 3, 9, 5, 4, 5, 7, 5\) is

  • (A) 5
  • (B) 7
  • (C) 8
  • (D) 9

Question 86:

If \(P(E) = 0.02\), then \(P(E')\) is equal to

  • (A) 0.02
  • (B) 0.002
  • (C) 0.98
  • (D) 0.97

Question 87:

Two dice are thrown at the same time. What is the probability that the difference of the numbers appearing on top is zero?

  • (A) \(\frac{1}{36}\)
  • (B) \(\frac{1}{6}\)
  • (C) \(\frac{5}{18}\)
  • (D) \(\frac{5}{36}\)

Question 88:

The probability of getting heads on both the coins in throwing two coins is

  • (A) \(\frac{1}{2}\)
  • (B) \(\frac{1}{3}\)
  • (C) \(\frac{1}{4}\)
  • (D) 1

Question 89:

A month is selected at random in a year. The probability of it being June or September is

  • (A) \(\frac{3}{4}\)
  • (B) \(\frac{1}{12}\)
  • (C) \(\frac{1}{6}\)
  • (D) \(\frac{1}{4}\)

Question 90:

The probability of getting a number 4 or 5 in throwing a die is

  • (A) \(\frac{1}{2}\)
  • (B) \(\frac{1}{3}\)
  • (C) \(\frac{1}{6}\)
  • (D) \(\frac{2}{3}\)

Question 91:

The distance between the points \( (8 \sin 60^\circ, 0) \) and \( (0, 8 \cos 60^\circ) \) is

  • (A) 8
  • (B) 25
  • (C) 64
  • (D) \(\frac{1}{8}\)

Question 92:

If \( O(0, 0) \) is the origin and coordinates of the point \( P \) are \( (x, y) \), then the distance \( OP \) is

  • (A) \(\sqrt{x^2 - y^2}\)
  • (B) \(\sqrt{x^2 + y^2}\)
  • (C) \(x^2 - y^2\)
  • (D) none of these

Question 93:

The distance of the point \( (12, 14) \) from the y-axis is

  • (A) 12
  • (B) 14
  • (C) 13
  • (D) 15

Question 94:

The ordinate of the point \( (-6, -8) \) is

  • (A) -6
  • (B) -8
  • (C) 6
  • (D) 8

Question 95:

In which quadrant does the point \( (3, -4) \) lie?

  • (A) First
  • (B) Second
  • (C) Third
  • (D) Fourth

Question 96:

Which of the following points lies in the second quadrant?

  • (A) \( (3, 2) \)
  • (B) \( (-3, 2) \)
  • (C) \( (3, -2) \)
  • (D) \( (-3, -2) \)

Question 97:

The co-ordinates of the mid-point of the line segment joining the points \( (4, -4) \) and \( (-4, 4) \) are

  • (A) \( (4, 4) \)
  • (B) \( (0, 0) \)
  • (C) \( (0, -4) \)
  • (D) \( (-4, 0) \)

Question 98:

The midpoint of line segment \( AB \) is \( (2, 4) \) and the co-ordinates of point \( A \) are \( (5, 7) \), then the co-ordinates of point \( B \) are

  • (A) \( (2, -2) \)
  • (B) \( (1, -1) \)
  • (C) \( (-2, -2) \)
  • (D) \( (-1, 1) \)

Question 99:

The co-ordinates of the ends of a diameter of a circle are \( (10, -6) \) and \( (-6, 10) \). Then the co-ordinates of the centre of the circle are

  • (A) \( (-2, -2) \)
  • (B) \( (2, 2) \)
  • (C) \( (-2, 2) \)
  • (D) \( (2, -2) \)

Question 100:

The co-ordinates of the vertices of a triangle are \( (4, 6) \), \( (0, 4) \), and \( (5, 5) \). Then the co-ordinates of the centroid of the triangle are

  • (A) \( (5, 3) \)
  • (B) \( (3, 4) \)
  • (C) \( (4, 4) \)
  • (D) \( (3, 5) \)

Question 101:

If the radius of the base of a cone is 7 cm and its height is 24 cm, find its curved surface area.


Question 102:

The length of the minute hand for a clock is 7 cm. Find the area swept by it in 40 minutes.


Question 103:

Prove that \( \tan 7^\circ \times \tan 60^\circ \times \tan 83^\circ = \sqrt{3} \).


Question 104:

Find the co-ordinates of the point which divides the line segment joining the points \( (-1, 7) \) and \( (4, -3) \) in the ratio 2:3 internally.


Question 105:

Find the area of the triangle whose vertices are \( (-5, -1), (3, -5), (5, 2) \).


Question 106:

The diagonal of a cube is \( \frac{9}{\sqrt{3}} \) cm. Find the total surface area of the cube.


Question 107:

Using the quadratic formula, find the roots of the equation \( 2x^2 - 2\sqrt{2}x + 1 = 0 \).


Question 108:

Find the sum of \( 3 + 11 + 19 + \dots + 67 \).


Question 109:

If the 5th and 9th terms of an A.P. are 43 and 79 respectively, find the A.P.


Question 110:

Find two consecutive positive integers, the sum of whose squares is 365.


Question 111:

The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Write the equation for this statement.


Question 112:

In triangle \( POR \), two points \( S \) and \( T \) are on the sides \( PQ \) and \( PR \) respectively, such that \[ \frac{PS}{PQ} = \frac{PT}{PR} \quad and \quad \angle PST = \angle PRT, \]
prove that \( \triangle POR \) is an isosceles triangle.


Question 113:

\( AB = AC \) in triangle \( \triangle ABC \). \( E \) is a point on side \( CB \) produced of an isosceles triangle \( \triangle ABC \) with \( AB = AC \). If \( AD \perp BC \) and \( EF \perp AC \), prove that \( \triangle ABD \cong \triangle ECF \).


Question 114:

In triangle \( \triangle ABC \), sides \( AB \) and \( BC \) and median \( AD \) of \( \triangle ABC \) are respectively proportional to sides \( PQ \) and \( PR \) and median \( PM \) of another triangle \( \triangle PQR \). Prove that \( \triangle ABC \sim \triangle PQR \).


Question 115:

In triangle \( \triangle ABC \) and \( \triangle DEF \), their areas are \( 9 \, cm^2 \) and \( 64 \, cm^2 \) respectively. If \( DE = 5.1 \, cm \), find \( AB \).


Question 116:

Prove that: \[ \frac{\sqrt{1 + \cos \theta}}{\sqrt{1 - \cos \theta}} = \frac{1 + \cos \theta}{\sin \theta} \]


Question 117:

Prove that: \[ \tan 9^\circ \cdot \tan 27^\circ = \cot 63^\circ \cdot \cot 81^\circ \]


Question 118:

If \( \cos A = \frac{4}{5} \), then find the values of \( \cot A \) and \( \csc A \).


Question 119:

A ladder 7 m long makes an angle of 30° with the wall. Find the height of the point on the wall where the ladder touches the wall.


Question 120:

In a parallelogram ABCD, if \( AD \) is extended to a point \( E \) and \( BE \) intersects \( CD \) at \( F \), then prove that \( \triangle ABE \cong \triangle CFB \).


Question 121:

ABC is an isosceles right triangle with \( \angle C \) as a right angle. Prove that \( AB^2 = 2AC^2 \).


Question 122:

If \( \tan \theta = \frac{5}{12} \), then find the value of \( \sin \theta + \cos \theta \).


Question 123:

If \( \sin 3A = \cos(A - 26^\circ) \), then find the value of \( A \), where \( 3A \) is an acute angle.


Question 124:

The sum of two numbers is 50, and one number is \( \frac{7}{3} \) times the other. Find the numbers.


Question 125:

Prove that \( 5 - \sqrt{3} \) is an irrational number.


Question 126:

For what value of \( k \) are the points \( (1, 1), (1, 3), (k, 3) \), and \( (-1, 4) \) collinear?


Question 127:

Find such a point on the y-axis which is equidistant from the points \( (6, 5) \) and \( (-4, 3) \).


Question 128:

Divide \( x^3 + 1 \) by \( x + 1 \).


Question 129:

Using Euclid's division algorithm, find the H.C.F. of 504 and 1188.


Question 130:

Find the discriminant of the quadratic equation \( 2x^2 + 5x - 3 = 0 \) and find the nature of the roots.


Question 131:

Draw the graphs of the pair of linear equations \( x + 3y - 6 = 0 \) and \( 2x - 3y - 12 = 0 \) and solve them.


Question 132:

If one angle of a triangle is equal to one angle of the other triangle and the sides included between these angles are proportional, then prove that the triangles are similar.


Question 133:

A two-digit number is four times the sum of its digits and twice the product of its digits. Find the number.


Question 134:

Draw a line segment of length 7.6 cm and divide it in the ratio 5:8. Measure both parts.


Question 135:

Prove that \[ \frac{\sec \theta - \tan \theta}{\sec \theta + \tan \theta} = 1 + 2 \tan^2 \theta - 2 \sec \theta \cdot \tan \theta \]


Question 136:

The radii of two circles are 19 cm and 9 cm respectively. Find the radius of the circle which has circumference equal to the sum of the circumferences of the two circles.


Question 137:

Find the mean of the following distribution:


Question 138:

The slant height of a frustum of a cone is 4 cm and the perimeters (circumferences) of its circular ends are 18 cm and 6 cm. Find the curved surface area of the frustum.

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