How many integers between 100 and 150 are not divisible by 5 and 3?

Question

Noemi Kramer

Mathematics

31 December, 18:05

How many integers between 100 and 150 are not divisible by 5 and 3?

+3

Answers (1)

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Darcy · Answer 1

Divisible by 5 AND 3 means divisible by 15

so find the multiples of 15 between 100 and 150. There are only three: 15*7=105, 15*8=120, 15*9=135

between 100 and 150 (not including 100 or 150, I assume) there are 49 integers, only 3 of them are visible by both 5 and 3, so 46 integers are not divisible by 5 and 3.

the answer is 46.