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ParthKohliBest ResponseYou've already chosen the best response.0
\[\Large \color{purple}{\rightarrow {7 * 6 * 5 * 4 * 3 * 2 * 1 \over 4 * 3^2 * 2^2 * 1 } }\]
 one year ago

CeWBest ResponseYou've already chosen the best response.0
no need to expand... just use 7! = 7*6*5*4! and cancel out the 4!
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
Cancel the terms that exist in both numerator and denominator.
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
I was explaining it in the most basic way.
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
\[\frac{7!}{4!3!} = \frac{7\times 6\times 5\times 4!}{4!3!}=\frac{7\times 6\times 5}{3 \times 2 \times 1}\]\[=7 \times 5 =?\]
 one year ago
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