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Prove that 1/(2n) ≤ [1 · 3 · 5 · ··· · (2n − 1)]/(2 ·...

Prove that 1/(2n) ≤ [1 · 3 · 5 · ··· · (2n − 1)]/(2 · 4 · ··· · 2n) whenever n is a positive integer.

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