(15) प्रश्नों में से (5) प्रश्न चुनने हैं लेकिन (3) विशेष प्रश्न नहीं चुनने हैं। कितने तरीके हैं?

From (15) questions, (5) questions are to be selected, but (3) special questions must not be selected. How many ways are there?

Explanation opens after your attempt
Correct Answer

B. (792)

Step 1

Concept

After removing (3) questions, (12) questions remain. Therefore there are \(\binom{12}{5}=792\) ways.

Step 2

Why this answer is correct

The correct answer is B. (792). After removing (3) questions, (12) questions remain. Therefore there are \(\binom{12}{5}=792\) ways.

Step 3

Exam Tip

(3) प्रश्न हटाने पर (12) प्रश्न बचते हैं। इसलिए \(\binom{12}{5}=792\) तरीके हैं।

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Mathematics Answer, Explanation and Revision Hints

(15) प्रश्नों में से (5) प्रश्न चुनने हैं लेकिन (3) विशेष प्रश्न नहीं चुनने हैं। कितने तरीके हैं? / From (15) questions, (5) questions are to be selected, but (3) special questions must not be selected. How many ways are there?

Correct Answer: B. (792). Explanation: (3) प्रश्न हटाने पर (12) प्रश्न बचते हैं। इसलिए \(\binom{12}{5}=792\) तरीके हैं। / After removing (3) questions, (12) questions remain. Therefore there are \(\binom{12}{5}=792\) ways.

Which concept should I revise for this Mathematics MCQ?

After removing (3) questions, (12) questions remain. Therefore there are \(\binom{12}{5}=792\) ways.

What exam hint can help solve this Mathematics question?

(3) प्रश्न हटाने पर (12) प्रश्न बचते हैं। इसलिए \(\binom{12}{5}=792\) तरीके हैं।