( \frac{(n+4)!}{n!} ) के विस्तार में कौन सा गुणक शामिल नहीं होगा?
Which factor will not appear in the expansion of ( \frac{(n+4)!}{n!} )?
Explanation opens after your attempt
Correct Answer
D. (n)
Concept
The expansion is ((n+4)(n+3)(n+2)(n+1)), so (n) is not included. Cancellation stops at the denominator (n!).
Why this answer is correct
The correct answer is D. (n). The expansion is ((n+4)(n+3)(n+2)(n+1)), so (n) is not included. Cancellation stops at the denominator (n!).
Exam Tip
विस्तार ((n+4)(n+3)(n+2)(n+1)) है, इसलिए (n) शामिल नहीं है। हर वाले (n!) तक कटौती हो जाती है।
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