Question

The number of integers from 1 to 100 which are neither divisible by 3, nor by 5 nor by 7, is? ​

Answer 1

Answer:

2,4,8,11,13,16,17,19,22,23,26,29,31,32,

33,34,37,38,41,43,44,46,47,51,53,57,

58,59,61,62,64,67,68,71,72,73,74,76,

78,79,81,82,83,86,88,89,92,94,97

Answer 2

An integer is any number that is not a fraction. Any whole number is called an integer. So, 1 - 100 all numbers are integers. Now the numbers which are not divisible by 3, 5, or 7 in between 1 - 100 are 2,4,8,11,13,16,17,19,22,23,26,29,31,32,33,34,37,38,41,43,44,46,47,51,53,57, 58,59,61,62,64,67,68,71,72,73,74,76, 78,79,81,82,83,86,88,89,92,94,97

So there are a total of 49 numbers between 1 - 100 that are not divisible by 3, 5 or 7.