Question

What is the unit digit of 144 +156*193^123?​

Answer 1

Step-by-step explanation:

156×(193)¹²³

Unit digit of (193)¹²³ is 3¹²³

3¹²³=3^(4(30)+3)=3³=27

Unit digit of (193)¹²³ is 7

Unit digit of 156 is 6

Unit digit of (193)¹²³×156 is 6×7 or 42 or 2

Unit digit of 144 is 4

Unit digit of 144+156×(193)¹²³ is

4+2 (or) 6