12. PLAYING WITH NUMBERS
Explanation:
83479560
A number is divisible by 3 if the sum of its digits is divisible by 3
Sum of its digits = 2 + 4 + 3 + 5 + 7 + 8 + 0 + 6 = 35, which is not divisible by 3.
So, 2357806 is not divisible by 3.
Sumofitsdigits 3 + 5 + 7 + 6 + 9 + 8 + 1 + 2 = 41, which is not divisible by 3.
So, 35769812 is not divisible by 3
Sum of its digits = 8 + 3 + 4 + 7 + 9 + 5 + 6 + 0 = 42, which is divisible by 3.
So, 2357806 is divisible by 3
Sum of its digits = 3 + 3 + 3 + 6 + 4 + 3 + 3 = 25, which is not divisible by 3.
So, 3336433 is not divisible by 3.