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The total number of arrangements of the letters in the expression a 3b 2c 4 when written at full length is?

1260
2520
610
None of these

Correct Answer: 1260

Explanation:

We have 9 letters 3 a's, 2 b's and 4 c's. These 9 letters can be arranged in 9! / (3! 2! 4!) = 1260 ways.

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