(4) लड़कों और (3) लड़कियों में से (1) लड़का और (1) लड़की कितने तरीकों से चुने जा सकते हैं?
From (4) boys and (3) girls, in how many ways can (1) boy and (1) girl be selected?
Explanation opens after your attempt
B. (12)
Concept
The selection is \(\binom{4}{1}\binom{3}{1}=12\). Multiply choices when selecting from different groups.
Why this answer is correct
The correct answer is B. (12). The selection is \(\binom{4}{1}\binom{3}{1}=12\). Multiply choices when selecting from different groups.
Exam Tip
चयन \(\binom{4}{1}\binom{3}{1}=12\) है। अलग-अलग वर्गों से चयन में गुणा करते हैं।
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