5 1-40.  Subtract:     10001₂ –    0110₂ 1. 1010₂ 2. 1011₂ 3. 1110₂ 4. 1001₂ 1-41.  Subtraction is accomplished by which of the following methods in a computer that can only add? 1.    Binary subtraction 2.    Decimal complement 3.    Complementary subtraction 4.    Minuend complement 1-42.  What is the R's-1 complement of 633₁₀? 1. 47710 2. 46610 3. 36610 4. 37710 1-43.  What is the R's-1 complement of 1011101₂? 1. 0100010₂ 2. 1011110₂ 3. 8988898₁₀ 4. 8988899₁₀ 1-44.  What is the R's complement of 395₁₀? 1. 604₁₀ 2. 605₁₀ 3. 715₁₀ 4. 714₁₀ 1-45.  Which of the following parts of a subtraction problem must be complemented to perform complementary subtraction? 1.    Subtrahend 2.    Difference 3.    Remainder 4.    Minuend 1-46.  Which of the following examples is the correct step when using the R's complement to subtract 123₁₀ from 264₁₀? 1.     735 +  123 2.     264 +  876 3.     264 +  321 4.     264 +  877 1-47. Which of the following solutions is correct when using the R's complement method of subtracting 516₁₀ from 845₁₀? 1.     845 +  483     328 2.     845 +  484     329 3.     845 +  615     460 4.     155 +  516     671 1-48.  Which of the following numbers is the R's-1 complement of the binary number 10101? 1. 10100₂ 2. 01011₂ 3. 01100₂ 4. 01010₂