Is 7821 divisible by 3? In other words, if you divide 7821 by 3, will you get a whole number with no remainder?
Of course, you could use a calculator to find out if 7821 is divisible by 3, but what fun would that be?
To find out if 7821 is divisible by 3, we will add up the numbers that make 7821 as follows: 7 + 8 + 2 + 1 = 18
We know that if the sum of the numbers that make up 7821 is divisible by 3, then 7821 is divisible by 3.
Since the sum of the digits in 7821 is divisible by 3, 7821 is also divisible by 3. Thus, the answer to the question "Is 7821 divisible by 3?" is as follows:
Yes
Note: If you divide 7821 by 3, you get 2607 which is a whole number.
Divisible by 3?
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