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

• 15
• 16
• 17
• 18

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

• 25
• 26
• 27
• 28

Convert 123₄ to base 10?

• 18

• 123

• 27

• 25

Convert 145 to base 4.

• 145₄

• 2101₄

• 3001₄

• 1202₄

Given that x₅ = 35_10, then x =

• 10
• 12
• 20
• 120

State the value of the underlined digit.

5037₉

• 3645

• 45

• 3697

• 81