A) 18
B) 432
C) 108
D) 144
Correct Answer: C
Solution :
Required sum\[=3\ !(3+4+5+6)=6\times 18=108\]. [If we fix 3 of the unit place, other three digits can be arranged in \[3\ !\] ways similarly for 4, 5, 6.]You need to login to perform this action.
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