Question

A box contains cards numbered 1 to 50. A card is drawn at random from the box. Calculate the
probability that the drawn card has a number which is a factor of 50.

Answer 1

Answer:

D

Solution :

Given numbers are 6,7,8,9,…,50.

Number of these numbers= 50-5=45.

Perfect square numbers from these are 32,42,52,62,72.

Their number is 5.

∴ P(getting a perfect square number) = 545=19.