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Question
Find the value of `(12!)/(9! xx 3!)`
Solution
`(12!)/(9! xx 3!) = (12 xx 11 xx 10 xx 9!)/(9! xx 3 xx 2 xx 1)`
= `(12 xx 11 xx 10)/(3 xx 2 xx 1)`
= 2 × 11 × 10
= 220
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