Question

17. The digit sum of any number is the sum of its digits. N is a 3 digit number. When the digit sum
of N is subtracted from N, we obtain the square of the digit sum of N. The number N is​

Answer 1

Answer:

156

Step-by-step explanation:

The digit sum of 156 is 12...

So 156-12 gives 144 which is the square of the digit sum of 156...

This question came in the AMTI exam.I also wrote it.