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Question
Is 3! + 4! = 7!?
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Solution
3! = 1 × 2 × 3 = 6
4! = 1 × 2 × 3 × 4 = 24
∴ 3! + 4! = 6 + 24 = 30
7! = 1 × 2 × 3 × 4 × 5 × 6 × 7 = 5040
∴ 3! + 4! ≠ 7!
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