1
Question
A bag contains 50 coins and each coin is marked from 51 to 100 . One coin is picked at random . The probability that the number on the coin is not a prime number is
(A) 1/5
(B) 3/5
(C) 2/5
(D) 4/5
A bag contains 50 coins and each coin is marked from 51 to 100 . One coin is picked at random . The probability that the number on the coin is not a prime number is
(A) 1/5
(B) 3/5
(C) 2/5
(D) 4/5
Open in App
Solution
The prime No bw 50 and 100 are 53,59,61,67,71,73,79,83,89,97
total 10 prime numbers are there
The probability not getting a prime No is = 1 - Probability to get a prime No
= 1 - 10/50
= 4/5
total 10 prime numbers are there
The probability not getting a prime No is = 1 - Probability to get a prime No
= 1 - 10/50
= 4/5
Suggest Corrections
14
Similar questions