A number is selected from numbers 1 to 25. The probability that it is prime is

Question

Philoid · Accepted Answer

Total numbers of elementary events are: 25

Let E be the event of getting a prime number

Favorable outcomes are: 2, 3, 5, 7, 11, 13, 17, 19, 23

Numbers of favorable outcomes are = 9

P (prime number) = P (E) = 9/25