Question

out of one digit prime numbers one number is selected at random the probability of selecting an even number is
(A) 1/2

(B) 1/4

(C) 4/9

(D) 2/5​

Answer 1

Answer:

total no. of 1 digit prime no. 4

probability of getting an even = 1 (2)

probability= 1/4

Answer 2

Probability of an even number = 1/4

• Prime numbers are those which are divisible by 1 and themselves and not by any other number.
• One digit prime numbers are four which are -> 2,3,5,7
• Even number from these numbers is only 2.
• Probability that selected number is an even number = 1/4