(18) अलग-अलग बैजों में से (2) बैज चुनने के कितने तरीके हैं?
How many ways are there to choose (2) badges from (18) different badges?
Explanation opens after your attempt
A. (153)
Concept
The number of ways is \(\binom{18}{2}=153\). Order is not counted in selection.
Why this answer is correct
The correct answer is A. (153). The number of ways is \(\binom{18}{2}=153\). Order is not counted in selection.
Exam Tip
दो बैज चुनने के तरीके \(\binom{18}{2}=153\) हैं। चयन में क्रम नहीं गिना जाता।
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