Question

find the probability of getting a prime number when a card drawn at random from the numbers from 1 to 25

Answer 1

prime numbers = 1,2,3,5,7,11,13 17,19,23

thus total prime no. = 10

Total no. = 25

probability = no. on observation / total no. of observation

probability = 10/25

answer = 2/5

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