(6) लाल और (5) नीली गेंदों में से (2) लाल और (1) नीली गेंद कितने तरीकों से चुनी जा सकती है?

From (6) red and (5) blue balls, in how many ways can (2) red and (1) blue ball be selected?

Explanation opens after your attempt
Correct Answer

D. (75)

Step 1

Concept

The ways are \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\). Select separately when colors are different.

Step 2

Why this answer is correct

The correct answer is D. (75). The ways are \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\). Select separately when colors are different.

Step 3

Exam Tip

तरीके \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\) हैं। रंग अलग हों तो चयन अलग-अलग करें।

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Mathematics Answer, Explanation and Revision Hints

(6) लाल और (5) नीली गेंदों में से (2) लाल और (1) नीली गेंद कितने तरीकों से चुनी जा सकती है? / From (6) red and (5) blue balls, in how many ways can (2) red and (1) blue ball be selected?

Correct Answer: D. (75). Explanation: तरीके \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\) हैं। रंग अलग हों तो चयन अलग-अलग करें। / The ways are \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\). Select separately when colors are different.

Which concept should I revise for this Mathematics MCQ?

The ways are \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\). Select separately when colors are different.

What exam hint can help solve this Mathematics question?

तरीके \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\) हैं। रंग अलग हों तो चयन अलग-अलग करें।