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The coefficient of x¹⁷ in the expansion of (x – 1) (x – 2) (x – 3) ... (x – 18) is

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Correct option is C

Coefficient of x17 = – (1 + 2 + 3 + ... + 18) =−182(1+18)=−9×19=−171

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The coefficient of x17 in the expansion of (x – 1) (x – 2) (x – 3) ... (x – 18) is

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The coefficient of x¹⁷ in the expansion of (x – 1) (x – 2) (x – 3) ... (x – 18) is