24.Unit Digit

Question 1

What is the unit digit when a number is raised to 0?

Answer 1

The unit digit is always 1.

Question 2

What is the unit digit when a number is raised to 1?

Answer 2

The unit digit is always the same as the original number.

Question 3

What is the unit digit when a number ending in 2 is raised to a power?

Answer 3

The unit digit sequence is 2, 4, 8, 6.

Question 4

What is the unit digit when a number ending in 3 is raised to a power?

Answer 4

The unit digit sequence is 3, 9, 7, 1.

Question 5

What is the unit digit when a number ending in 4 is raised to a power?

Answer 5

The unit digit sequence is 4, 6.

Question 6

What is the unit digit when a number is ending in 5 raised to any power?

Answer 6

The unit digit is always 5.

Question 7

What is the unit digit when a number ending in 6 is raised to any power?

Answer 7

The unit digit is always 6.

Question 8

What is the unit digit when a number ending in 7 is raised to a power?

Answer 8

The unit digit sequence is 7, 9, 3, 1.

Question 9

What is the unit digit when a number ending in 8 is raised to a power?

Answer 9

The unit digit sequence is 8, 4, 2, 6.

Question 10

What is the unit digit when a number ending in 9 is raised to a power?

Answer 10

The unit digit sequence is 9, 1.