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What is the value of \(\frac{7!}{4!}\)?\(\frac{7!}{4!}\) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 210210
Since \(7!=7\times6\times5\times4!\), \(\frac{7!}{4!}=7\times6\times5=210\). The value \(120\) is only \(5!\); here, the factors 7, 6, and 5 must be multiplied. Exam tip: In \(\frac{n!}{r!}\), cancel \(r!\) and multiply the integers from \(r+1\) to \(n\).क्योंकि \(7!=7\times6\times5\times4!\), इसलिए \(\frac{7!}{4!}=7\times6\times5=210\)। \(120\) केवल \(5!\) का मान है, जबकि यहाँ 7, 6 और 5 का गुणन करना है। परीक्षा टिप: \(\frac{n!}{r!}\) में \(r!\) को काटने के बाद \((r+1)\) से \(n\) तक की संख्याओं का गुणन करें।
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