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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Medium

1 of 1

Application +4 | -1

The one's and ten's digits in

1 !+2 !+3 !+\ldots+49

! are respectively

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Correct option: B

3 and 1

Option B (3 and 1) is correct because the sum of the factorials from 1! to 49! ends in 13, so the one's digit is 3 and the ten's digit is 1.

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