(6) विद्यार्थियों में से (5) विद्यार्थियों को प्रतियोगिता के लिए चुनने के कितने तरीके हैं?
How many ways are there to select (5) students from (6) students for a competition?
Explanation opens after your attempt
B. (6)
Concept
\(\binom{6}{5}=\binom{6}{1}=6\). Sometimes counting the person not selected is easier.
Why this answer is correct
The correct answer is B. (6). \(\binom{6}{5}=\binom{6}{1}=6\). Sometimes counting the person not selected is easier.
Exam Tip
\(\binom{6}{5}=\binom{6}{1}=6\) है। कभी-कभी न चुने गए व्यक्ति को गिनना आसान होता है।
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