Question

A number having $7$ at its ones place will have $3$ at the unit's place of its square.

• A. True
• B. False

Answer 1

The correct option is B False

The given statement is 'a number having $7$ at its ones place will have $3$ at the unit's place of its square.'

Let us take some examples to understand the given statement:

Square of $7=7\times 7=49$

Square of $17=17\times 17=289$

Square of $27=27\times 27=729$

Thus we can say that a number having $7$ at its ones place need not have $3$ at the unit's place of its square.

Therefore the given statement is false.