The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 7972.
7972 has 4 digits. The digits in 7972 are 7, 9, 7, and 2.
When you are asking for the sum of the digits of 7972, you are basically asking what is
7 plus 9 plus 7 plus 2?
Therefore, the sum of the digits in 7972 is as follows:
7 + 9 + 7 + 2 = 25
Sum of digits in 7973
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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