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7
if two computers are playing tic-tac-toe, but they are choosing their squares randomly, what is the chance for X to win?
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6
Is there any website/software that let's me compare two mathematical statements and let me know if both are equivalent?
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6
Sum of $\sum_0^\infty \frac1{n^4+a^4}$
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5
Solving $a^3 - 33 ab^2 = -217$ and $3a^2 b - 11b^3 = 18$?
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