JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

1 of 1

Application +4 | -1

Find the remainder when

1 !+2 !+3 !+\ldots+n

! is divided by 15, if

n \geq 5

View answer and explanation

Correct option: C

Option C (3) is correct because for n ≥ 5, all terms from 5! onwards are divisible by 15, so the remainder is determined by the sum of the first four terms.

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