\( \frac{11!}{8!}-\frac{10!}{7!} \) का मान क्या है?
What is the value of \( \frac{11!}{8!}-\frac{10!}{7!} \)?
Explanation opens after your attempt
C. (360)
Concept
\(11\cdot10\cdot9=990\) and \(10\cdot9\cdot8=720\), so the difference is (270). Expand three consecutive factors.
Why this answer is correct
The correct answer is C. (360). \(11\cdot10\cdot9=990\) and \(10\cdot9\cdot8=720\), so the difference is (270). Expand three consecutive factors.
Exam Tip
\(11\cdot10\cdot9=990\) और \(10\cdot9\cdot8=720\), इसलिए अंतर (270) है। लगातार तीन गुणकों का विस्तार करें।
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