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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

1 of 1

Analyzing +4 | -1

Let

S_n=\sum\limits_{{r=1}}^n r ! ; (n > 6)

, then

S_n-7\left[\frac{S_n}{7}\right]

(where, [ ] denotes the greatest integer function) is equal to

View answer and explanation

Correct option: C

5

Option C (5) is the correct answer because the remainder when

S_n

is divided by 7 is 5 for

n > 6

.

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