What is the unit’s digit of 7^4 Choose the correct answer:
A) 3
B) 1
C) 5
D) 7
E) 9
7^1=7   7^2=49   7^3=343   7^4=1(last digit)   Therefore, last digit of 7^4=1   Answer 1
<result>B</result>
What is the unit’s digit of 7^4