What is the unit digit in 27 power 20
Asked by admin @ in Math viewed by 300 People
What is the unit digit of 27 power 20?
Asked by admin @ in Math viewed by 300 People
What is the unit digit of 27 power 20?
Answered by admin @
Answer:
Unit digit of 27^1 =7 ( 7^1 =7)
,, ,, ,,, 27^2 =9 (7^2 =49)
UD of 27^3 =3 (7^3 =343)
UD of 27^4=1 (7^4=2401)
Hence for every four consecutive powers, the unit digit will follow a pattern of 7,9,3,1.
Hence UD of 27^20 will be 1.
Step-by-step explanation:
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