NCERT Solutions for Class 10 Maths Chapter 15 Probability Exercise 15.1

CBSE X Related Questions

  • 1.
    Three coins are tossed together. The probability of getting exactly two tails is

      • \(\frac{2}{8}\)
      • \(\frac{1}{2}\)
      • \(\frac{3}{8}\)
      • 1

    • 2.
      Find the H.C.F. and L.C.M. of 408 and 312.


        • 3.
          In the given figure, \(\Delta ABC\) is a right-angled triangle with \(\angle A = 90^\circ\). AD is perpendicular to BC.

          35(a)(i) Prove that \(\Delta DBA \sim \Delta DAC\)


            • 4.
              In the given figure, two triangles ABC and PQR are shown such that \(\angle A = \angle P\) and \(\angle C = \angle R\). If \(AD \perp BC\) and \(PS \perp QR\), then prove that (i) \(\Delta ADB \sim \Delta PSQ\) (ii) \(AD \times QS = BD \times PS\).


                • 5.
                  In the given figure, PQ is a tangent to a circle with centre \(O(-5, 3)\). If coordinates of P and Q are \((3, 1)\) and \((0, 6)\) respectively, then using distance formula, show that \(PQ \perp OQ\).


                    • 6.
                      \(17 \times 11 \times 13 + 11\) is

                        • a prime number.
                        • multiple of 17.
                        • a composite number.
                        • an odd number.

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