The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 407.
407 has 3 digits. The digits in 407 are 4, 0, and 7.
When you are asking for the sum of the digits of 407, you are basically asking what is
4 plus 0 plus 7?
Therefore, the sum of the digits in 407 is as follows:
4 + 0 + 7 = 11
Sum of digits in 408
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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