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Dat Do edited beginproblem_a_You_a.tex
about 10 years ago
Commit id: 8afacd5ce2d46202e937ad5ce847badf80cbf6e2
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\textbf{Solution 1: }
\smallskip
(a) \noindent
{(a)} Since we are receiving one extra coupon for each consecutive day, the total coupons received for $k$ days can be represented as $\sum\limits_{i=1}^k i$ = $\frac{n(n+1)}{2}$