What number is not a square number and not even?

Answer 1

All non-even numbers are odd.

All squares of even numbers are even.

All squares of odd numbers are odd.

Therefore all numbers which are odd and not the square of an odd number are the solution set.

It contains: {3, 5, 7, 11, 13, 15, 17, 19, 21, 23, 27, 29, 31, ...}

Answer 2

Well, isn't that just a happy little question! The number you're looking for is 3. It's not a square number because it can't be made by multiplying a number by itself, and it's not even because it can't be divided by 2 without a remainder. Just like every tree needs a friend, every number has its own unique qualities that make it special.

Answer 3

Well, honey, the number you're looking for is 1. It's not a square number because the square root of 1 is 1, and it's not even because, well, it's just not. So there you have it, 1 is your answer.