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In how many different ways can the letters of the word ENGINEERING be arranged?

A. 277200

B. 92400

C. 69300

D. 23100

E. None of these

Answer: Option A

Solution(By Examveda Team)

The given word contains 11 letters, namely 3E, 3N, 2G, 2I and 1R
So, Required number of ways :
$$\eqalign{ & = \frac{{11!}}{{3! \,3! \,2! \,2! \,1!}} \cr & = \frac{{11 \times 10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1}}{{6 \times 6 \times 2 \times 2 \times 1}} \cr & = \left( {11 \times 10 \times 9 \times 8 \times 7 \times 5} \right) \cr & = 277200 \cr} $$

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Comments ( 1 )

  1. Hnamte Rinfela
    Hnamte Rinfela :
    10 months ago

    how do 3 turns to 6?

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