What is the remainder when five digit number 23abc is divided by 5 if 'c' is non-zero natural number not more than 5.
Either c or 0
A number to be divisible by 5 should have 0 or 5 at one's place. Since c is non zero natural number not more than 5, it will be 0 ≠ c ≤ 5, therefore on dividing the remainder will be either c or 0.