Question

find the last digit of 7²⁰¹⁴​

Answer 1

Answer:

8

Step by Step explanation :

Answer 2

Answer:

1

17

256

Note:- Multiplicity of 7 is 4 (Means after every 4th power of 7 the last digit repeat that is

7

1

=7,

7

4

=2401

7

5

=16807

7

6

=117649

Last digit is 9.

So, we have powers last digits {7,9,3,1}

So, in 17

256

last digit is same as 7

256

=7

4×63+4

=7

4

So, the last digit is 1.