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Q.

How many prime numbers are between 50 and 100?

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a

3

b

10 

c

5

d

9

answer is D.

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Detailed Solution

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The natural number that is greater than 1 is said to be a prime number and if it has only two factors, 1 and itself.
Prime factors between 50 and 100 are,
53, 59, 61, 67, 71, 73, 79, 83, 89, 97 
Therefore, there are 10 prime numbers between 50 and 100.

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