Question

a bag contains some square cards. a prime number between 1 and 100 has been written on each card. find the probability of getting a card that the sum of the digits of prime number written on it, is 8

Answer 1

There are 25 prime numbers between 1 and 100. They are 2, 3, 5, 7, 11, 13,17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59,61, 67, 71, 73, 79, 83, 89, and97.
so possible combinations are
17,53,71
so total 3 possibilities out of 25 so
p=3/25=0.12 or 12%

Answer 2

Hey mate !!!!

Here is your answer....

There are 25 prime no. between 1 and 100. They are 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,

53,59,61, 67,71,73,79,83,89 and 97.

So possible combination are 17 , 53, 71 .

so total 3 possibilities out of 25. so,

p =3/25 = 0.12 or 12% .

Hope it helps...