(1) से (40) तक की संख्याओं में से (5) संख्याएं चुननी हैं जिनमें ठीक (2) संख्याएं (4) की गुणज हों। कितने तरीके हैं?
From numbers (1) to (40), (5) numbers are to be selected with exactly (2) numbers being multiples of (4). How many ways are there?
Explanation opens after your attempt
A. (122760)
Concept
There are (10) multiples of (4) and (30) non-multiples. The ways are \(\binom{10}{2}\binom{30}{3}=122760\).
Why this answer is correct
The correct answer is A. (122760). There are (10) multiples of (4) and (30) non-multiples. The ways are \(\binom{10}{2}\binom{30}{3}=122760\).
Exam Tip
(4) की (10) गुणज और (30) गैर-गुणज संख्याएं हैं। तरीके \(\binom{10}{2}\binom{30}{3}=122760\) हैं।
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