Question

Prove that k is odd if ksquare is odd

Answer 1

Answer:

The square of an odd number is always odd. One definition of an even number is that it is divisible by 2 with no remainder. If a number is evenly divisible by 2, then you could say that 2 is one of its factors. Any number that has a factor of 2 is even.

e.g 7 is a odd number

therefore, 7²=49