शब्द (NOON) के अलग-अलग arrangements कितने हैं?
How many distinct arrangements are there for the word (NOON)?
Explanation opens after your attempt
Correct Answer
B. (6)
Concept
(N) occurs twice and (O) occurs twice, so \(\frac{4!}{2!2!}=6\). Divide by both repeated groups.
Why this answer is correct
The correct answer is B. (6). (N) occurs twice and (O) occurs twice, so \(\frac{4!}{2!2!}=6\). Divide by both repeated groups.
Exam Tip
(N) दो बार और (O) दो बार हैं इसलिए \(\frac{4!}{2!2!}=6\)। दो repeated groups हों तो दोनों से भाग दें।
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