this is for holding javascript data
Dat Do edited beginproblem_a_You_a.tex
about 10 years ago
Commit id: efe31f64870110b7da45cfdbab802aea26becf5e
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look them up.
\end{problem}
\textbf{Solution 1: }
(a) Since we are receiving one extra coupon for each consecutive day, the total coupons received for $k$ days can be represented as $\sum\limits_{i=1}^k i$ = $\frac{k(k+1)}{2}$
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(a) Since we are receiving one extra coupon for each consecutive day, the total coupons received for $k$ days can be represented as $\sum\limits_{i=1}^k i$ = $\frac{n(n+1)}{2}$ (b)