Why is 3 a divisible of 2,838

Step-by-step explanation:

To find out if 2838 is divisible by 3, you can add up the digits that make 2838 as follows: 2 + 8 + 3 + 8 = 21

We know that if the sum of the numbers that make up 2838 is divisible by 3, then 2838 is divisible by 3.

Since the sum of the digits in 2838 is divisible by 3, 2838 is also divisible by 3.