Year 10 CS IGCSE - Binary recap

What is binary also known as?

• Base 1

• Base 2

• Base 3

• Base 10

What are the number choices in binary?

• 0 and 1

• 0, 1 and 2

• 0 to 2

• 0 to 9

What are the first 6 powers in binary?

• 0, 2, 4, 8, 12, 32

• 1, 2, 4, 8, 16, 31

• 1, 2, 6, 8, 16, 32

• 1, 2, 4, 8, 16, 32

What is 23 in binary

• 10101

• 10110

• 10111

• 11000

What is 1001 binary number in denary?

• 8

• 9

• 10

• 11

What is 111111 in denary?

• 60

• 61

• 62

• 63

What is the binary addition rule for 1 + 1 + 1?

• 0

• 1

• 0 carry 1

• 1 carry 1

what is 0 + 1 in binary?

• 0

• 10

• 11

• 1

What is 1 + 1 in binary?

• 10

• 01

• 11

• 2

What is 111 +110?

• 1100

• 1101

• 1110

• 1111