Question

A bag contains cards numbered from 1 to 25. A card is drawn at random from the bag. Find the probability that the selected card bears a number which is : (1) an odd number (2) a prime number
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Answer 1

n(x) =13

probability of selecting

odd numbers =13/25

(2) prime numbers= 2,3,5,7,11,13,17,19,23

probability of selecting prime=9/25