(5) लड़कों और (5) लड़कियों में से (1) लड़का और (1) लड़की चुनने के कितने तरीके हैं?
From (5) boys and (5) girls, in how many ways can (1) boy and (1) girl be selected?
Explanation opens after your attempt
C. (25)
Concept
The ways are \(\binom{5}{1}\binom{5}{1}=25\). The two selections are independent, so multiply.
Why this answer is correct
The correct answer is C. (25). The ways are \(\binom{5}{1}\binom{5}{1}=25\). The two selections are independent, so multiply.
Exam Tip
तरीके \(\binom{5}{1}\binom{5}{1}=25\) हैं। दोनों चयन स्वतंत्र हैं इसलिए गुणा करें।
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