A) 432
B) 120
C) 36
D) 18
Correct Answer: B
Solution :
Suppose times we fix a one number in a unit place, then rest of the three numbers can arrange is 3!ie, 6. It means, a number which is in unit place is added 6 times. Similary, this process is going on rest of the numbers. \[\therefore \]Sum of the digits in the unit's place of all the numbers \[=(3+4+5+8)\times 6=20\times 6=120\]You need to login to perform this action.
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