(9) पुस्तकों में से (3) पुस्तकों का सेट कितने तरीकों से बनाया जा सकता है?
In how many ways can a set of (3) books be made from (9) books?
Explanation opens after your attempt
C. (84)
Concept
Order is not important while making a set. Hence \(\binom{9}{3}=84\) is correct.
Why this answer is correct
The correct answer is C. (84). Order is not important while making a set. Hence \(\binom{9}{3}=84\) is correct.
Exam Tip
सेट बनाने में क्रम का महत्व नहीं होता। इसलिए \(\binom{9}{3}=84\) सही है।
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