JEE MATHEMATICS MCQ: PERMUTATIONS

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Eleven books consisting of 5 Mathematics, 4 physics and 2 Chemistry are places on a shelf. The number of possible ways of arranging them on the assumption that the books of the same subject are all together, is

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Correct option: C

5!4!3!2!

Option C (

5!4!3!2!

) is correct because it accounts for arranging the books within each subject and then arranging the subjects themselves.

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