(11) गणित और (8) भौतिकी पुस्तकों में से (6) पुस्तकें चुननी हैं जिनमें कम से कम (4) गणित पुस्तकें हों। कितने तरीके हैं?
From (11) mathematics and (8) physics books (6) books are to be selected with at least (4) mathematics books. How many ways are there?
Explanation opens after your attempt
Correct Answer
C. (13398)
Concept
The cases are (4), (5), and (6) mathematics books. The total is \(\binom{11}{4}\binom{8}{2}+\binom{11}{5}\binom{8}{1}+\binom{11}{6}=13398\).
Why this answer is correct
The correct answer is C. (13398). The cases are (4), (5), and (6) mathematics books. The total is \(\binom{11}{4}\binom{8}{2}+\binom{11}{5}\binom{8}{1}+\binom{11}{6}=13398\).
Exam Tip
मामले (4), (5) और (6) गणित पुस्तकों के हैं। कुल \(\binom{11}{4}\binom{8}{2}+\binom{11}{5}\binom{8}{1}+\binom{11}{6}=13398\) है।
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