(9) रंगों में से (2) रंगों का झंडा बनाना है लेकिन रंगों का स्थान तय नहीं है। कितने चयन हैं?
A flag is to be made by choosing (2) colors from (9) colors, but the positions of colors are not fixed. How many selections are there?
Explanation opens after your attempt
B. (36)
Concept
Positions are not fixed, so only colors are selected. The ways are \(\binom{9}{2}=36\).
Why this answer is correct
The correct answer is B. (36). Positions are not fixed, so only colors are selected. The ways are \(\binom{9}{2}=36\).
Exam Tip
स्थान तय नहीं है इसलिए केवल रंगों का चयन है। तरीके \(\binom{9}{2}=36\) हैं।
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