(12) वस्तुओं में से (4) वस्तुएं चुननी हैं और (3) विशेष वस्तुओं में से अधिकतम (1) चुनी जाए। कितने तरीके हैं?
From (12) objects (4) objects are to be selected and at most (1) of (3) special objects is chosen. How many ways are there?
Explanation opens after your attempt
Correct Answer
A. (336)
Concept
Either (0) or (1) special object can be chosen. The total is \(\binom{3}{0}\binom{9}{4}+\binom{3}{1}\binom{9}{3}=378\).
Why this answer is correct
The correct answer is A. (336). Either (0) or (1) special object can be chosen. The total is \(\binom{3}{0}\binom{9}{4}+\binom{3}{1}\binom{9}{3}=378\).
Exam Tip
विशेष वस्तुओं में से (0) या (1) चुनी जा सकती है। कुल \(\binom{3}{0}\binom{9}{4}+\binom{3}{1}\binom{9}{3}=378\) है।
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