Question 11
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In how many ways can the letters of INSTITUTE be arranged?
- A 60,480
- B 30,240 Correct
- C 3,62,880
- D 15,120
Correct Answer: Option B
9 letters: T three times, I twice
9! ÷ (3! × 2!) = 3,62,880 ÷ 12 = 30,240
Trap: 60,480 divides only for the Ts.
Answer: 30,240
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