(7) अध्यायों में से पुनरावृत्ति के लिए ठीक (4) अध्याय चुनने के कितने तरीके हैं?
How many ways are there to choose exactly (4) chapters from (7) chapters for revision?
Explanation opens after your attempt
B. (35)
Concept
The order of chapters is not asked. Therefore \(\binom{7}{4}=35\).
Why this answer is correct
The correct answer is B. (35). The order of chapters is not asked. Therefore \(\binom{7}{4}=35\).
Exam Tip
अध्यायों का क्रम नहीं पूछा गया है। इसलिए \(\binom{7}{4}=35\) होगा।
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