(1) से (12) तक की संख्याओं में से (3) संख्याएं चुननी हैं जिनमें सभी सम हों। कितने तरीके हैं?
From numbers (1) to (12), (3) numbers are to be selected and all must be even. How many ways are there?
Explanation opens after your attempt
C. (20)
Concept
There are (6) even numbers from (1) to (12). Hence there are \(\binom{6}{3}=20\) ways.
Why this answer is correct
The correct answer is C. (20). There are (6) even numbers from (1) to (12). Hence there are \(\binom{6}{3}=20\) ways.
Exam Tip
(1) से (12) तक (6) सम संख्याएं हैं। इसलिए \(\binom{6}{3}=20\) तरीके हैं।
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