What is the remainder if 7^8 is divided by 100?

What is the remainder if 7^8 is divided by 100?

Quiz

Answer/Solution

1

Steps/Work

7^8 can be written as (7^4)^2
If we divide 7^4 by 100 the reminder is 1
So, (7^4)^2 by 100, the reminder is 1^2 = 1
Answer : B