(18) संख्याओं में से (8) संख्याएं चुननी हैं जिनमें (3) निश्चित संख्याएं शामिल हों और (2) निश्चित संख्याएं शामिल न हों। कितने तरीके हैं?
From (18) numbers (8) numbers are to be selected with (3) fixed numbers included and (2) fixed numbers excluded. How many ways are there?
Explanation opens after your attempt
Correct Answer
B. (1287)
Concept
The (3) numbers are fixed and (2) are excluded. The remaining (5) numbers are chosen from (13), so \(\binom{13}{5}=1287\).
Why this answer is correct
The correct answer is B. (1287). The (3) numbers are fixed and (2) are excluded. The remaining (5) numbers are chosen from (13), so \(\binom{13}{5}=1287\).
Exam Tip
(3) संख्याएं तय हैं और (2) हट गई हैं। बाकी (5) संख्याएं (13) में से चुनी जाएंगी इसलिए \(\binom{13}{5}=1287\) है।
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