NIFT PG 2009 Question Paper with solutions

Question : 136 of 150

Marks: +1, -0

In how many different ways can the letters of word ‘OPERATE’ be arranged?

Solution:

Required number of ways

=\;\;{7!}/{2!}=\;\;{1×2×3×4×5×6×7}/{1×2}

=2520

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