Question

1. Write five numbers which you cannot decide just by looking at their units digit
(or units place) whether they are square numbers or not.

Answer 1

Answer:

We can write many numbers which do not end with 0, 1, 4, 5, 6 or 9. (i.e. which are not square number). Five such numbers can be: 1234, 4312, 5678, 87543, 1002007