Seudónimo Seudónimo

05-05-2016
Mathematics

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How many three-digit counting numbers are exactly divisible by 6 but not also exactly divisible by 9?

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BabyLuigi BabyLuigi

05-05-2016

There are ⌊ 999 6 ⌋ − ⌊ 99 6 ⌋ numbers between 100 and 999 (i.e. three digit numbers) which are divisible by six.

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HelpsMePlease HelpsMePlease

05-05-2016

There are a total of 900 /999-99/ 3-digit numbers. And they are 900 consecutive numbers, 1/6th of these should be divisible by 6, 900/6=150 numbers. So the answer to your question is answer is... 150! :3

Hope I helped.

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