Evaluate:8! – 6! - Vidyadip

Question

Evaluate:8! – 6!

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Answer

8! – 6!
= 8 × 7 × 6! – 6!
= 6! (8 × 7 – 1)
= 6! (56 – 1)
= 6 × 5 × 4 × 3 × 2 × 1 × 55
= 39,600

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