(7) अक्षरों में (A) अक्षर (3) बार समान हो तो व्यवस्थाओं का expression क्या होगा?
If among (7) letters the letter (A) is identical (3) times what is the expression for arrangements?
Explanation opens after your attempt
Correct Answer
C. \(\frac{7!}{3!}\)
Concept
In total (7!) arrangements the (3!) internal orders of (A) are identical. In exams put the factorial of the repeated object in the denominator.
Why this answer is correct
The correct answer is C. \(\frac{7!}{3!}\). In total (7!) arrangements the (3!) internal orders of (A) are identical. In exams put the factorial of the repeated object in the denominator.
Exam Tip
कुल (7!) व्यवस्थाओं में (A) के (3!) अंदरूनी क्रम समान हैं। परीक्षा में repeated object का factorial denominator में रखें।
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