The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 7170.
7170 has 4 digits. The digits in 7170 are 7, 1, 7, and 0.
When you are asking for the sum of the digits of 7170, you are basically asking what is
7 plus 1 plus 7 plus 0?
Therefore, the sum of the digits in 7170 is as follows:
7 + 1 + 7 + 0 = 15
Sum of digits in 7171
See if you can calculate the sum of the digits in the next number on our list before you go here.
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