Question

Cards marked with numbers 3, 4, 5, ...., 50 are placed in a box and mixed thoroughly. One card is drawn at random from the box. Find the probability that the number on the drawn card
a) divisible by 3 and 4
b) a perfect square.

Answer 1

probability of number divisible by 3 and 4 is 1/18
probability of number a perfect square is 1/12