Find the sum of the sum of the sum of digits (i.e. digit sum) of 25! [e.g. digit sum of 378 = 3+7+8 = 18 : 1+8 = 9] Options: A . &nbsp9 B . &nbsp3 C . &nbsp6 D . &nbsp7 E . &nbspNone of these

Find the sum of the sum of the sum of digits (i.e. digit sum) of 25! [e.g.

Question

Find the sum of the sum of the sum of digits (i.e. digit sum) of 25! [e.g. digit sum of 378 = 3+7+8 = 18 : 1+8 = 9]

Answer: Option A
:
A
Option (a)
Digit Sum = Remainder whenanumber is dividedby 9

\frac{25!}{9} R e m = 0 \Rightarrow

Digit Sum=9

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