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

Question

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3632

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Guest Mar 14, 2015

+33616

+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.

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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.

.