Question 1116935
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If a number is a multiple of 8, it is a multiple of 4, so we can reduce the criteria to numbers that are both a multiple of 8 and a multiple of 5.  A number that is a multiple of 8 must be an even number because 8 has no odd factors.  A number that is a multiple of 5 must either end in a 5 or a 0.  Since a number that ends in 5 is odd, the number we are looking for must end in a zero.  Our candidates have now been reduced to the following list:


70, 80, 90, 100, 110


Only one of which is a multiple of 8.  I'll leave it to you to figure out which one.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  


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