Question

A box contains cards numbered 6 to 50. card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square is

Answer 1

Correct Answer - D
Given numbers are 6,7,8,9,…,50.
Number of these numbers= 50-5=45.
Perfect square numbers from these are ` 3^(2), 4^(2), 5^(2),6^(2),7^(2)`.
Their number is 5.
` :. ` P(getting a perfect square number) = ` 5/45 = 1/9`.