(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
D. (75)
Concept
The ways are \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\). Select separately when colors are different.
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.
Exam Tip
तरीके \(\binom{6}{2}\binom{5}{1}=15\cdot5=75\) हैं। रंग अलग हों तो चयन अलग-अलग करें।
Login to save your score, XP, coins and progress.
