Balls numbered from 1 to 38 are placed in a container and stirred. If one is drawn at random, what is the probability that the number is a prime number?
A) $\frac { 6 } { 19 }$
B) $\frac { 9 } { 19 }$
C) $\frac { 20 } { 38 }$
D) $\frac { 13 } { 38 }$

Question

Quizplus · Accepted Answer

The prime numbers between 1 and 38 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, and 37. So, there are 12 prime numbers out of 38 numbers. Therefore, the probability of drawing a prime number is 12/38 = 6/19.

Balls Numbered from 1 to 38 Are Placed in a Container