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Let Sn=sum(r+1)^(n)r ! (n>6), then Sn-7[...

Let `S_n=sum_(r+1)^(n)r ! (n>6)`, then `S_n-7[(S_n)/7]` (where [.] denotes the greatest integer function) is equal to (A) `[n/7]` (B) `n! -7[(n-1)/7]` (C) 5 (D) 3

A

`[n/7]`

B

`nt-7[(n!)/7]`

C

5

D

3

Text Solution

Verified by Experts

The correct Answer is:
C
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FIITJEE-FUNCTION-ASSIGNMENT PROBLEMS (OBJECTIVE) Level-I
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