mario1433

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8 Questions

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2	Show that if $n$ and $k$ are integers with $1 ≤ k ≤ n$, then ${n\choose k} \le (n^k)/ 2^{k−1}$
1	How many ways are there to distribute 5 balls into 3 boxes
1	Showing that $3n<n!$ whenever $n$ is an integer with $n \geq 7$
1	How many different permutations of this set don't have vowels on the ends?
1	How many permutations of this set can be made?

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40 Reputation

+5	How many permutations of this set can be made?
+5	Solving 12! but for addition
+5	Show that if $n$ and $k$ are integers with $1 ≤ k ≤ n$, then ${n\choose k} \le (n^k)/ 2^{k−1}$
+5	How many ways are there to distribute 5 balls into 3 boxes

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2 Answers

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0	Solving 12! but for addition
-1	Solving a double integral

10 Tags

0 discrete-mathematics × 5	0 induction
0 proof-writing × 4	0 homework
0 proof-strategy × 4	0 probability
0 factorial	-1 integral × 2
0 inequality	-1 definite-integral × 2

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