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Question
A number is selected at random from 40 to 59 inclusive . What is the probability that the number is prime number ?
3/11
3/10
2/11
1/5
None of these
ANSWER : 5
Descrption
<p>Total number of numbers = 59 - 40 + 1 = 20</p> <p>Prime numbers : 41, 43, 47, 53, 59 = 5 in total</p> <p>So, the probability = 5/20 = <strong>1/4</strong></p>
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