Question

What is the least number that should be subtracted from 26492518 so that the resulting number is divisible by 3 but not 9

Answer 1

Adding all its terms,

2 + 6 + 4 + 9 + 2 + 5 + 1 + 8 = 37,

Now by divisibility rules we can subtract 4 to get 33 which is divisible by 3 but not by 9

So number is 4.