(4) लड़कों में से (2) और (5) लड़कियों में से (1) चुनने का connected expression क्या है?
What is the connected expression for choosing (2) boys from (4) boys and (1) girl from (5) girls?
Explanation opens after your attempt
Correct Answer
B. \(^{4}C_2\times{}^{5}C_1\)
Concept
Two independent selections are needed together so the multiplication principle applies. In exams the word and often means multiply.
Why this answer is correct
The correct answer is B. \(^{4}C_2\times{}^{5}C_1\). Two independent selections are needed together so the multiplication principle applies. In exams the word and often means multiply.
Exam Tip
दो स्वतंत्र selections साथ-साथ चाहिए इसलिए गुणन सिद्धांत लगेगा। परीक्षा में and शब्द आने पर अक्सर multiply करें।
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