Test for Divisibility by 3:
• A Number is divisible by 3 if the Sum of the Digits in the Number is divisible by 3
Sum of the Digits in 23: 2+3 = 5
5 is not divisible by 3
Therefore, 23 is NOT divisible by 3
Note: Since 23 is not divisible by 3, it follows that 23 is also not divisible by any multiple of 3 (6, 9, 12, …)
Test 23 for Divisibility by 3
The solution above and all other related solutions were provided by the Test for Divisibility by 3 Application.
