Question 2
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How many distinct arrangements are there of all the letters of ENGINEERING?
- A 2,77,200 Correct
- B 5,54,400
- C 1,38,600
- D 39,916,800
Correct Answer: Option A
11 letters: E 3, N 3, G 2, I 2, R 1
11! ÷ (3! 3! 2! 2!) = 2,77,200
Trap: 5,54,400 divides for one I/G pair only.
Answer: 2,77,200
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