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115 reputation
 bio website visits member for 3 months
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4 Answers

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3
Number of partitions of $n$ with $k$ parts equals the number of partitions of $n + \binom k {2}$
2
Formula for $\sum _{i=1}^n (n+1-i) (n-i)$
1
Lottery: Finding the probability of winning respective prizes
0
Probability of having exactly 1 pair from drawing 5 cards
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