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Class 11 Mathematics Permutations and Combinations Fundamental principle of countingExpert

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How many distinct arrangements of the letters of (BANANA) are possible if no two (A)'s are adjacent?

Answer and explanation

Correct answer: (12)

First arrange (B,N,N), then place the (3) identical (A)'s in the (4) gaps formed. Handle repeated letters and gaps carefully.

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Letters Gap-Method Repetition Fundamental Principle Of Counting Permutations And Combinations Mathematics Class 11 Mcq

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