By just examining the unit digit, can you tell which of the following cannot be whole square?
If the units digit of a number is 2, 3, 7 or 8, the number cannot be a whole square.
1027 has 7 as the unit digit, so it cannot be a perfect square.
Is there an error in this question or solution?
Video Tutorials For All Subjects
- Finding Square Root Through Prime Factorisation