Question

The digit at units place of the number 3^99-3^50

Answer 1

Answer:

the right answer is 7 ithink may be

Step-by-step explanation:

(3×99)-(3×50)=97

Answer 2

Answer:

I think the right answer is 8

Step-by-step explanation:

3^99 = 99÷4 = 24

unit digit = 3 ( remainder )

3^50= 50÷4 = 2 (remainder)

3^3- 3^2 = 27- 9

unit digit = 7-9 (7over it )

= 8 right answer