Question

What is units place in 9⁹

Answer 1

Answer : 1

9 = 9 unit place 9

9*9 = 81 unit place 1

9^3 = 729 unit place 9

9^4 = 6561 unit place 1

So we can say 9^n has unit place 1 if n is odd and unit place 9 if n is even

Here n = 9 is odd number so unit place will be 1

9^9 unit place = 1