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

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Bihar Board Class 10 Mathematics 2025 Question Paper with Solutions

Question 1:

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

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

Question 2:

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 3:

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

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

Question 4:

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

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

Question 5:

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

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

Question 6:

Which of the following values is equal to 1 ?

  • (A) \(\sin^2 60^\circ + \cos 60^\circ\)
  • (B) \(\sin 90^\circ \times \cos 90^\circ\)
  • (C) \(\sin^2 60^\circ\)
  • (D) \(\sin 45^\circ \times \frac{1}{\cos 45^\circ}\)

Question 7:

\(\cos^2 A (1 + \tan^2 A) = \)

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

Question 8:

\(\tan 30^\circ = \)

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

Question 9:

\(\cos 60^\circ = \)

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

Question 10:

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

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

Question 11:

The distance between the points (8 sin 60°, 0) and (0, 8 cos 60°) is

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

Question 12:

If O(0, 0) be the origin and co-ordinates of the point P be (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 13:

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

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

Question 14:

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

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

Question 15:

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

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

Question 16:

Which of the following points lies in second quadrant ?

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

Question 17:

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 18:

The mid-point 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 19:

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 20:

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 21:

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

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

Question 22:

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

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

Question 23:

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 24:

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 25:

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 26:

\(\frac{\cos 59^\circ}{\sin 31^\circ} \times \frac{\tan 80^\circ}{\cot 10^\circ} = \)

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

Question 27:

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

  • (A) 25°
  • (B) 65°
  • (C) 90°
  • (D) 45°

Question 28:

If \(\cos \theta = x\) then \(\tan \theta = \)

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

Question 29:

\(1 - \cos^4 \theta = \)

  • (A) \(\cos^2 \theta (1 - \cos^2 \theta)\)
  • (B) \(\sin^2 \theta (1 + \cos^2 \theta)\)
  • (C) \(\sin^2 \theta (1 - \sin^2 \theta)\)
  • (D) \(\sin^2 \theta (1 + \sin^2 \theta)\)

Question 30:

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

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

Question 31:

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 32:

If the sum of zeros of a quadratic polynomial is 3 and their product is -2 then that quadratic polynomial is

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

Question 33:

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

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

Question 34:

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

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

Question 35:

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 36:

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 37:

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 38:

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 39:

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

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

Question 40:

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 41:

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

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

Question 42:

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

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

Question 43:

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 44:

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

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

Question 45:

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) 16 : 81
  • (C) 81 : 16
  • (D) 2 : 3

Question 46:

\(\triangle ABC \sim \triangle DEF\) and BC = 3 cm, EF = 4 cm. If the area of \(\triangle ABC\) is 54 cm\(^2\), then the area of \(\triangle DEF\) is

  • (A) 56 cm\(^2\)
  • (B) 96 cm\(^2\)
  • (C) 196 cm\(^2\)
  • (D) 49 cm\(^2\)

Question 47:

In any \(\triangle ABC\), \(\angle A = 90^\circ\), 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 48:

In \(\triangle DEF\) and \(\triangle PQR\) it is given that \(\angle D = \angle Q\) and \(\angle R = \angle E\), then which of the following is correct?

  • (A) \(\angle F = \angle P\)
  • (B) \(\angle F = \angle Q\)
  • (C) \(\angle D = \angle P\)
  • (D) \(\angle E = \angle P\)

Question 49:

\(\triangle ABC\) 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 50:

The number of common tangents of two intersecting circles is

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

Question 51:

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 52:

The ratio of the radii of two cylinders is 4 : 5 and the ratio of their heights is 6 : 7, then the ratio of their volumes is

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

Question 53:

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 54:

If the curved surface area of a cone is 880 cm\(^2\) and its radius is 14 cm, then its slant height is

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

Question 55:

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

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

Question 56:

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 57:

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 58:

If the curved surface area of a hemisphere is 1232 cm\(^2\) then its radius is

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

Question 59:

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

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

Question 60:

\(\frac{1 + \tan^2 A}{1 + \cot^2 A} = \)

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

Question 61:

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 62:

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 63:

If \(\alpha\) and \(\beta\) be the zeros of the polynomial \(cx^2 + ax + b\) then the value of \(\alpha . \beta\) is

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

Question 64:

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 65:

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) \((\sqrt{2}x + 3)^2 = 2x^2 + 5\)

Question 66:

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

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

Question 67:

Which of the following points lies on the graph of x = 2 ?

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

Question 68:

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 69:

The common difference of arithmetic progression 1, 5, 9, ... is

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

Question 70:

Which term of the A.P. 5, 8, 11, 14, ... is 38 ?

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

Question 71:

The length of the class intervals of the classes, 2 - 5, 5 - 8, 8 - 11, ... is

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

Question 72:

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

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

Question 73:

The mean of first 6 even natural numbers is

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

Question 74:

\(1 + \cot^2 \theta = \)

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

Question 75:

The mode of 8, 7, 9, 3, 9, 5, 4, 5, 7, 5 is

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

Question 76:

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

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

Question 77:

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 78:

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 79:

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 80:

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 81:

Which of the following fractions has terminating decimal expansion?

  • (A) \(\frac{14}{2^0 \times 3^2}\)
  • (B) \(\frac{9}{5^1 \times 7^2}\)
  • (C) \(\frac{8}{2^2 \times 3^2}\)
  • (D) \(\frac{15}{2^2 \times 5^3}\)

Question 82:

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) \(\frac{101}{2^3 \times 5^2}\)

Question 83:

In 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 84:

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

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

Question 85:

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 86:

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) \(x + \frac{4}{x}\)

Question 87:

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) \(x^2 + \sqrt{8}\)

Question 88:

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

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

Question 89:

The value of \((\sin 30^\circ + \cos 30^\circ) - (\sin 60^\circ + \cos 60^\circ)\) is

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

Question 90:

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) \(-\frac{4}{3}\)
  • (D) \(\frac{4}{3}\)

Question 91:

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 92:

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) \(40^\circ\)
  • (B) \(50^\circ\)
  • (C) \(80^\circ\)
  • (D) \(60^\circ\)

Question 93:

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

  • (A) \(30^\circ\)
  • (B) \(45^\circ\)
  • (C) \(60^\circ\)
  • (D) \(90^\circ\)

Question 94:

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 95:

The area of the sector of a circle of radius 42 cm and central angle 30\(^\circ\) is

  • (A) 515 cm\(^2\)
  • (B) 416 cm\(^2\)
  • (C) 462 cm\(^2\)
  • (D) 406 cm\(^2\)

Question 96:

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 97:

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

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

Question 98:

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

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

Question 99:

The angle of elevation of the top of a tower at a distance of 10 m from its base is 60\(^\circ\); 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 100:

A kite is at a height of 30 m from the earth and its string makes an angle 60\(^\circ\) with the earth. Then the length of the string is

  • (A) \(30\sqrt{2}\) m
  • (B) \(35\sqrt{3}\) m
  • (C) \(20\sqrt{3}\) m
  • (D) \(45\sqrt{2}\) m

Question 101:

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


Question 102:

Sides AB and BC and median AD of a \(\triangle ABC\) are respectively proportional to sides PQ and QR and median PM of another \(\triangle PQR\). Then prove that \(\triangle ABC \sim \triangle PQR\).


Question 103:

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


Question 104:

Prove that \(\sqrt{\frac{1+\cos\theta}{1-\cos\theta}} = \frac{1+\cos\theta}{\sin\theta}\)


Question 105:

Prove that \(\tan 9^\circ \cdot \tan 27^\circ = \cot 63^\circ \cdot \cot 81^\circ\).


Question 106:

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


Question 107:

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


Question 108:

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


Question 109:

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


Question 110:

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


Question 111:

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


Question 112:

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


Question 113:

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


Question 114:

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 115:

In a triangle PQR, two points S and T are on the sides PQ and PR respectively such that \(\frac{PS}{SQ} = \frac{PT}{TR}\) and \(\angle PST = \angle PRQ\), then prove that \(\triangle PQR\) is an isosceles triangle.


Question 116:

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


Question 117:

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


Question 118:

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


Question 119:

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


Question 120:

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


Question 121:

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


Question 122:

A ladder 7 m long makes an angle of 30\(^\circ\) with the wall. Find the height of the point on the wall where the ladder touches the wall.


Question 123:

E is a point on the extended part of the side AD of a parallelogram ABCD and BE intersects CD at F; then prove that \(\triangle ABE \sim \triangle CFB\).


Question 124:

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


Question 125:

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


Question 126:

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


Question 127:

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


Question 128:

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


Question 129:

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


Question 130:

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


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 of 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 \( \frac{\sec\theta - \tan\theta}{\sec\theta + \tan\theta} = 1 + 2\tan^2\theta - 2\sec\theta\tan\theta \)


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.Correct Answer:

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