(\frac{(n+4)!}{(n+1)!}) में कितने लगातार गुणनखंड बचते हैं?
How many consecutive factors remain in (\frac{(n+4)!}{(n+1)!})?
Explanation opens after your attempt
B. (3)
Concept
(\frac{(n+4)!}{(n+1)!}=(n+4)(n+3)(n+2)), so three factors remain. Reduce the numerator up to the denominator factorial.
Why this answer is correct
The correct answer is B. (3). (\frac{(n+4)!}{(n+1)!}=(n+4)(n+3)(n+2)), so three factors remain. Reduce the numerator up to the denominator factorial.
Exam Tip
(\frac{(n+4)!}{(n+1)!}=(n+4)(n+3)(n+2)), इसलिए तीन गुणनखंड बचते हैं। हर के फैक्टोरियल तक अंश को घटाएं।
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