Question

what os the unit digit in 27^20​

Answer 1

Step-by-step explanation:

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.

Answer 2

Answer:

Solution:-

• Answer:Solution:-Unit of digit 27¹ = 7 ( 7¹= 7)

• 27²= 9 (7²= 49)

• UD of 27³ = 3 (7³= 343)

• UD of 27⁴ = 1 (7⁴= 2401)

Hance,

For every four consecutive powers, the unit digit will follow a pattern of (7,9,3,1)

So,

27²⁰ will be 1