A) 131
B) 151
C) 181
D) 161
Correct Answer: D
Solution :
The digit-sums are as follows: \[131\to 1+3+1=5\] \[151\to 1+5+1=7\] \[181\to 1+8+1=10\to 1+0=1\] \[171\to 1+7+1=9\] \[161\to 1+6+1=8\] Only 161 has its digit-sum even.You need to login to perform this action.
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