(9) अलग-अलग फाइलों में से (6) फाइलें चुनने के कितने तरीके हैं?

How many ways are there to choose (6) files from (9) different files?

Explanation opens after your attempt
Correct Answer

D. (84)

Step 1

Concept

\(\binom{9}{6}=\binom{9}{3}=84\). Complementary selection makes calculation easier.

Step 2

Why this answer is correct

The correct answer is D. (84). \(\binom{9}{6}=\binom{9}{3}=84\). Complementary selection makes calculation easier.

Step 3

Exam Tip

\(\binom{9}{6}=\binom{9}{3}=84\) है। पूरक चयन से गणना आसान होती है।

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Mathematics Answer, Explanation and Revision Hints

(9) अलग-अलग फाइलों में से (6) फाइलें चुनने के कितने तरीके हैं? / How many ways are there to choose (6) files from (9) different files?

Correct Answer: D. (84). Explanation: \(\binom{9}{6}=\binom{9}{3}=84\) है। पूरक चयन से गणना आसान होती है। / \(\binom{9}{6}=\binom{9}{3}=84\). Complementary selection makes calculation easier.

Which concept should I revise for this Mathematics MCQ?

\(\binom{9}{6}=\binom{9}{3}=84\). Complementary selection makes calculation easier.

What exam hint can help solve this Mathematics question?

\(\binom{9}{6}=\binom{9}{3}=84\) है। पूरक चयन से गणना आसान होती है।