( \frac{(n+3)!}{(n+1)!} ) किसके बराबर है?
What is ( \frac{(n+3)!}{(n+1)!} ) equal to?
Explanation opens after your attempt
B. ( (n+3)(n+2) )
Concept
((n+3)!=(n+3)(n+2)(n+1)!), so the answer is ((n+3)(n+2)). Expand the larger factorial up to the smaller one.
Why this answer is correct
The correct answer is B. ( (n+3)(n+2) ). ((n+3)!=(n+3)(n+2)(n+1)!), so the answer is ((n+3)(n+2)). Expand the larger factorial up to the smaller one.
Exam Tip
((n+3)!=(n+3)(n+2)(n+1)!), इसलिए उत्तर ((n+3)(n+2)) है। बड़ी फैक्टोरियल को छोटी फैक्टोरियल तक फैलाएं।
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