Question

What will be the remainder if 7^15 is divided by 5

Answer 1

Answer:

3

Step-by-step explanation:

7 has a cyclicity of 4 at its last digit(unit digit) varying 7,9,3,1 respectively...,

so 7^15 means the last digit would be 3(since,15/4 gives remainder 3),

Therefore the remainder if 7^15 is divided by 5 is 3.

Hope it helps u...