The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 7513.
7513 has 4 digits. The digits in 7513 are 7, 5, 1, and 3.
When you are asking for the sum of the digits of 7513, you are basically asking what is
7 plus 5 plus 1 plus 3?
Therefore, the sum of the digits in 7513 is as follows:
7 + 5 + 1 + 3 = 16
Sum of digits in 7514
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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