\(6\times5\times4!\) किसके बराबर है?
\(6\times5\times4!\) is equal to which of the following?
Explanation opens after your attempt
B. (6!)
Concept
\(6!=6\times5\times4!\), so the given product is (6!). A factorial can be identified from the middle expansion too.
Why this answer is correct
The correct answer is B. (6!). \(6!=6\times5\times4!\), so the given product is (6!). A factorial can be identified from the middle expansion too.
Exam Tip
\(6!=6\times5\times4!\), इसलिए दिया गया गुणनफल (6!) है। फैक्टोरियल को बीच से भी पहचाना जा सकता है।
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