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Question
Write in terms of factorial.
3 × 6 × 9 × 12 × 15
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Solution
3 × 6 × 9 × 12 × 15
= 3 × (3 × 2) × (3 × 3) × (3 × 4) × (3 × 5)
= (35) (5 × 4 × 3 × 2 × 1)
= 35 (5!)
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