Question

Cards marked with all 2 digit no. Are placed in a box and are mixed thoroughly . One card is drawn at random. Find the probability that the no. On the card is
1. Divible by 10
2. A perfect square no.
3. A prime no. Less than 25.

Answer 1

Answer:

P ( divible by 10) = 9/90 = 1/10

P ( a perfect square no) = 6/90

p ( a prime no less than 25) = 5/90

Answer 2

P(divisible by 10) = 9/90 = 1/10 =0.1

P(a perfect square) = 6/90

P(prime no less than 25) = 5/90