13C7 = 13!/(7!·6!) = 13·12·11·10·9·8/(6·5·4·3·2·1) = 17169P4 = 9!/(5!) = 9·8·7·6 = 3024

Evaluate 2 Problems and Demonstrate.

Inactive Tutor answered • 01/11/23

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₁₃C₇= 13!/(7!·6!) = 13·12·11·10·9·8/(6·5·4·3·2·1) = 1716

₉P₄ = 9!/(5!) = 9·8·7·6 = 3024

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