Question

If a number ends with '6', then its square ends with .

• A. 4
• B. 6
• C. 1
• D. 9

Answer 1

The correct option is B 6

If the unit digit of any number is '6', then the unit digit of its square will be '6'.

For example, $6^2=36$, ${16}^2=256$, ${26}^2=676$, ${36}^2=1296$ etc. all end with '6'.