The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 780.
780 has 3 digits. The digits in 780 are 7, 8, and 0.
When you are asking for the sum of the digits of 780, you are basically asking what is
7 plus 8 plus 0?
Therefore, the sum of the digits in 780 is as follows:
7 + 8 + 0 = 15
Sum of digits in 781
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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