शब्द (REPETITION) के अक्षरों की कुल भिन्न व्यवस्थाएं कितनी हैं?
What is the total number of distinct arrangements of the letters of (REPETITION)?
Explanation opens after your attempt
Correct Answer
B. (453600)
Concept
Here (E,T,I) are each repeated twice, so the count is (10!/(2!2!2!)). Divide by the factorial of each repeated letter.
Why this answer is correct
The correct answer is B. (453600). Here (E,T,I) are each repeated twice, so the count is (10!/(2!2!2!)). Divide by the factorial of each repeated letter.
Exam Tip
इसमें (E,T,I) दो-दो बार हैं, इसलिए संख्या (10!/(2!2!2!)) है। हर दोहराए अक्षर के फैक्टोरियल से भाग दें।
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