A number is selected at random between 20 and 3... - JAMB Mathematics 2020 Question
A number is selected at random between 20 and 30, both numbers inclusive. Find the probability that the number is a prime.
A
\(\frac{2}{11}\)
B
\(\frac{5}{11}\)
C
\(\frac{6}{11}\)
D
\(\frac{8}{11}\)
correct option: a
Possible outcomes are 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30.
Prime numbers in the possible outcomes: 23, 29.
The probability of choosing a prime number = \(\frac{\text{Number of Prime}}{\text{No. of Total Possible Outcome}}\)
= \(\frac{2}{11}\)
Please share this, thanks:
Add your answer
No responses