Question

If a number has 1 and 9 in unit place then it's square end with which of the following numbers 1,4,5,6

Answer 1

Answer:

The unit place will end with digit 1.

Step-by-step explanation:

For example, (11) square = 121

Similarly, (99) square = 9801

Therein, in above examples it is clearly visible that when we square 1 or 9 when it is placed at unit digit; it ends with 1.

Answer 2

Answer:

the unit place end with 1

example : 11²=121