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Subjects
Class 11MathematicsPermutations and CombinationsPermutationsHard
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How many arrangements of the letters of (TRIANGLE) have exactly (3) letters between (T) and (E)?

Answer and explanation

Correct answer: (1920)

There are (4) possible position pairs for (T) and (E), with (2) orders, and the remaining (6!) arrangements. In position-based questions, choose fixed positions first.

Related tags

PermutationsPosition GapWordsPermutations And CombinationsMathematicsClass 11 Mcq
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