Question 979917
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9000 divided by 10 is 900, so 900 of the numbers from 1 to 9000 are divisible by 10.  900 divided by 9 is 100, so 100 of the numbers divisible by 10 are also divisible by 9.  Therefore 800 of the numbers from 1 to 9000 that are divisible by 10 are NOT divisible by 9.


If something is divisible by 2 AND 3, then it must be divisible by 6.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

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*[tex \LARGE \ \ \ \ \ \ \ \ \ \