Question

if a² ends with 1 then a³ ends with​

Answer 1

Step-by-step explanation:

Given :-

a² ends with 1

To find :-

a³ ends with which number

Solution:-

If a is equal to or its unit place either 1 or 9 then a² ends with 1

since 1²=1 and 9²=81

now ,a³=1³=1 and 9³=729

so,a³ ends with either 1 or 9

Answer 2

God knows best........

In the square's of the numbers

of ends 1 is only two numbers are 1 and 9.

There are 1^2 = 1 and 9^2 = 81.

Therefore if a = 1,1^2 = 1 and

1^3 = 1.so, a^2 and a^3 are also

ends with one.

Therefore if a = 9,9^2 = 81 and 9^3 = 729.so, a^2 ends with 1

but a^3 ends with 9.

I hope it is helpful to you........