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Question
Someone is asked to take a number from 1 to 100. The probability that it is a prime is ______.
Options
`1/5`
`6/25`
`1/4`
`13/50`
Solution
Someone is asked to take a number from 1 to 100. The probability that it is a prime is `underlinebb(1/4)`.
Explanation:
Total numbers of outcomes = 100
So, the prime numbers between 1 to 100 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 56, 61, 67, 71, 73, 79, 83, 89 and 97.
∴ Total number of possible outcomes = 25
∴ Required probability = `25/100`
= `1/4`
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