$\sum^{100}_{i=1}\sum_{j \neq i} A_iB_j$
How many total summations would happen within this expression? I'm thinking 100*99? Since there are 100 on the outer sum, and then one less on the inner sum?
Thanks
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2Yes, you're correct. – Bernard Nov 06 '20 at 22:58
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@Bernard Thanks! – Katie Melosto Nov 06 '20 at 23:00