The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 3917.
3917 has 4 digits. The digits in 3917 are 3, 9, 1, and 7.
When you are asking for the sum of the digits of 3917, you are basically asking what is
3 plus 9 plus 1 plus 7?
Therefore, the sum of the digits in 3917 is as follows:
3 + 9 + 1 + 7 = 20
Sum of digits in 3918
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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