The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 3320.
3320 has 4 digits. The digits in 3320 are 3, 3, 2, and 0.
When you are asking for the sum of the digits of 3320, you are basically asking what is
3 plus 3 plus 2 plus 0?
Therefore, the sum of the digits in 3320 is as follows:
3 + 3 + 2 + 0 = 8
Sum of digits in 3321
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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