Numbers divisible by 2 or 5

Posted on 2011-10-21
Last Modified: 2012-05-12
How many numbers between 1 and 999 (inclusive) are divisible by either 2 or 5?

Question by:mustish1
    LVL 84

    Accepted Solution

    LVL 7

    Assisted Solution

    Ok, for finding that, you know that half of what 5 can go into is an even number, and there are 198 possible combinations for 5 to go into under 1000 (999/5, drop remainder). so 198/2 is 99. There are 99 numbers under 1000 that either 5 or 2 can go into.

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