Here you can find the solution for your Telangana SCERT Mathematics Chapter Number 1 Real Numbers, Exercise 1.2, Question number 3 which is Check whether 6n can end with the digit 0 for any natural number n.
Solution: If any number ends with '0', then this prime = 2m x 5m.
(Therefore: 6n if we factorize, 6 = 2 x 3).
Since 6n does not have 2m x 5m.
So, 6n can't end with the digit '0', for any natural number because its prime factors does not contain 2m x 5m.