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How many ordered quadruples (a, b, c, d) satisfy
                                                                                 a + b + c + d = 18
where a, b, c, and d are integers such that |a|, |b|, |c|, and |d| are each at most 10?

 Aug 7, 2020
 #1
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The number of quadruples that work is 1277.

 Aug 7, 2020
 #2
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Hi buddy, 1277 is the right answer.

 

Regards,

Connie R. Lawson

 Aug 7, 2020

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