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32 Questions

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38	Prove every odd integer is the difference of two squares
16	Why don't Venn diagrams count as formal proofs?
5	Logic - how to prove $\;[(p \rightarrow q) \land (q \rightarrow r)] \rightarrow (p \rightarrow r) \equiv T\;$?
4	How many strings are there that use each character in the set $\{a, b, c, d, e\}$?
4	Help with intro to Set Theory

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610 Reputation

+15	Prove every odd integer is the difference of two squares
+10	Show that $(n - 1)2^{n+1} + 2 + (n+1)2^{n+1} = n(2^{n+2})+2$
+15	How to get from $1 + (-1)^{n+1}$ to $1 + [((−1)^{n }) − 1] (−1)$
+5	Arrange $n$ men and $n$ women in a row, alternating women and men.

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0 homework × 11	0 recursive-algorithms × 3
0 combinatorics × 7	0 logic × 3
0 proof-writing × 7	0 discrete-mathematics × 2
0 algebra-precalculus × 5	0 elementary-number-theory × 2
0 elementary-set-theory × 4	0 propositional-calculus × 2

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