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Q.

The number of primes less than 50  is

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a

19

b

16

c

17

d

15

answer is D.

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Detailed Solution

A natural number which has only two factors one and itself  is called prime number. The number of prime numbers less than 50  is  15 .  They are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29,31, 37, 41, 43 and 47 .

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