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Using Pascal's identity (\binom{9}{4}+\binom{9}{5}) is equal to which expression?(\binom{9}{4}+\binom{9}{5}) पास्कल पहचान से किसके बराबर है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\binom{10}{5})(\binom{10}{5})
By Pascal's identity (\binom{n}{r}+\binom{n}{r+1}=\binom{n+1}{r+1}). Hence the answer is (\binom{10}{5}).पास्कल पहचान से (\binom{n}{r}+\binom{n}{r+1}=\binom{n+1}{r+1}) होता है। इसलिए उत्तर (\binom{10}{5}) है।
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