Form 4 : Chapter 2

1. 100111₂ = ...................₈

• 47
• 67
• 77
• 11

Given that x₅ = 35_10, then x =

• 10
• 12
• 20
• 120

101₂ + 111₂ =

• 1000₂
• 1001₂
• 1011₂
• 1100₂

Which of the following is false?

• 101₂ + 11₂ = 1000₂
• 101₂ - 11₂ = 10₂
• 101 110₂ = 56₈
• 234₈ = 1 011 100₂

Given that 43₅ < x₁₀ < 34_8, which of the following is not a possible value of x?

• 25
• 26
• 27
• 28

Given that X₁₀ = 11₂ + 11₅ + 11_8, find the value of X.

• 15
• 16
• 17
• 18

Which of the following is false?

• 101₂ + 11₂ = 1000₂
• 101₂ - 11₂ = 10₂
• 101 110₂ = 56₈
• 234₈ = 1 011 100₂

110 100₂ - 11 011₂ =

• 10 000₂
• 10 001₂
• 11 001₂
• 11 011₂

Given that 4x5³ + 2x5² + 5y = 4230_5, find the value of y.

• 0
• 2
• 3
• 6

11 011₂ =

• 17₁₀
• 27₁₀
• 33₁₀
• 37₁₀