Question 204217
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Of the digits 0 through 9, 5 of them are odd, so there are 5 ways to select the first digit.  There are no restrictions on the second digit so it can be any one of the 10 digits 0 through 9.  Of the digits 0 through 9, 5 of them are even (0 is an even number by definition), so there are 5 ways to select the third digit.  In all:

 
*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 5\ \times\ 10\ \times\ 5]


You can do your own arithmetic.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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