(13) विद्यार्थियों में से (4) विद्यार्थियों की टीम बनानी है जिसमें (2) विशेष विद्यार्थी शामिल न हों। कितने तरीके हैं?

A team of (4) students is to be formed from (13) students excluding (2) special students. How many ways are there?

Explanation opens after your attempt
Correct Answer

B. (330)

Step 1

Concept

After excluding (2) special students (11) students remain. So the number of ways is \(\binom{11}{4}=330\).

Step 2

Why this answer is correct

The correct answer is B. (330). After excluding (2) special students (11) students remain. So the number of ways is \(\binom{11}{4}=330\).

Step 3

Exam Tip

(2) विशेष विद्यार्थियों को हटाने पर (11) विद्यार्थी बचते हैं। इसलिए \(\binom{11}{4}=330\) तरीके होंगे।

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Mathematics Answer, Explanation and Revision Hints

(13) विद्यार्थियों में से (4) विद्यार्थियों की टीम बनानी है जिसमें (2) विशेष विद्यार्थी शामिल न हों। कितने तरीके हैं? / A team of (4) students is to be formed from (13) students excluding (2) special students. How many ways are there?

Correct Answer: B. (330). Explanation: (2) विशेष विद्यार्थियों को हटाने पर (11) विद्यार्थी बचते हैं। इसलिए \(\binom{11}{4}=330\) तरीके होंगे। / After excluding (2) special students (11) students remain. So the number of ways is \(\binom{11}{4}=330\).

Which concept should I revise for this Mathematics MCQ?

After excluding (2) special students (11) students remain. So the number of ways is \(\binom{11}{4}=330\).

What exam hint can help solve this Mathematics question?

(2) विशेष विद्यार्थियों को हटाने पर (11) विद्यार्थी बचते हैं। इसलिए \(\binom{11}{4}=330\) तरीके होंगे।