(1) से (18) तक की संख्याओं में से (4) सम संख्याएं चुनने के कितने तरीके हैं?
From numbers (1) to (18), how many ways are there to choose (4) even numbers?
Explanation opens after your attempt
B. (126)
Concept
There are (9) even numbers from (1) to (18). Hence there are \(\binom{9}{4}=126\) ways.
Why this answer is correct
The correct answer is B. (126). There are (9) even numbers from (1) to (18). Hence there are \(\binom{9}{4}=126\) ways.
Exam Tip
(1) से (18) तक (9) सम संख्याएं हैं। इसलिए \(\binom{9}{4}=126\) तरीके हैं।
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