How many three-digit numbers are not multiples of 7?

Question

0

3660

1

Guest Mar 14, 2015

+33658

+11

Best Answer

999/7 is just over 142

100/7 is just over 14

so there are (142 - 14) = 128 numbers that are multiples of 7, hence there are 999-99-128 = 772 numbers that are not multiples of 7.

.

Alan Mar 14, 2015

Alan · Answer 1 · 2015-03-14T04:56:44

999/7 is just over 142

100/7 is just over 14

so there are (142 - 14) = 128 numbers that are multiples of 7, hence there are 999-99-128 = 772 numbers that are not multiples of 7.

.