(5) अलग रंगों में से (3) रंग चुनकर झंडे में ऊपर से नीचे लगाने का सही connected expression क्या है?
What is the correct connected expression for choosing (3) colours from (5) distinct colours and placing them from top to bottom in a flag?
Explanation opens after your attempt
B. \(^{5}C_3\times3!\)
Concept
Order is important when placing from top to bottom so the chosen (3) colours are arranged in (3!) ways. In exams add arrangement when positions appear.
Why this answer is correct
The correct answer is B. \(^{5}C_3\times3!\). Order is important when placing from top to bottom so the chosen (3) colours are arranged in (3!) ways. In exams add arrangement when positions appear.
Exam Tip
ऊपर से नीचे लगाने में क्रम महत्वपूर्ण है इसलिए चुने हुए (3) रंगों को (3!) तरीकों से लगाया जाएगा। परीक्षा में positions दिखें तो arrangement जोड़ें।
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