Question

Using divisibility rules, find which of the following numbers are divisible by 5 and 10.
(a) 836 (b) 3005 (c) 4820

Answer 1

We know that if the unit digit of a number is 0 or 5, then it is exactly divisible by 5 and if the unit digit of a number is 0, then it is exactly divisible by 10.

(a) In the number 836, the unit digit is 6, so it is neither divisible by 5 nor 10.

(b) In the number 3005, the unit digit is 5, so it is divisible by 5 but not 10.

(c) In the number 4820, the unit digit is 0, so it is divisible by both 5 and 10 .