Question

Find the number of positive integer lying between 1 and 100 both inclusive but not divisible by 2 3 and 5

Answer 1

all primes between 7 to 100:
7,11,13,17,19,23,19,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97.

Answer 2

7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97


these all are prime.and this number is not divisible by 2,3,5.

2,3,5 are i including prime number but they are all divisible by 2,3,5.so we do not include in positive integer.


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