Which of the examples below expresses the commutative law of multiplication? A +

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Question
Which of the examples below expresses the commutative law of multiplication?
Options
A. A + B = B + A
B. A ? B = B + A
C. A ? (B ? C) = (A ? B) ? C
D. A ? B = B ? A

Correct Answer

A ? B = B ? A

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2. Which statement below best describes a Karnaugh map?
Options
A. It is simply a rearranged truth table.
B. The Karnaugh map eliminates the need for using NAND and NOR gates.
C. Variable complements can be eliminated by using Karnaugh maps.
D. A Karnaugh map can be used to replace Boolean rules.

5. What is the difference between binary coding and binary coded decimal?
Options
A. Binary coding is pure binary.
B. BCD is pure binary.
C. Binary coding has a decimal format.
D. BCD has no decimal format.

8. One of DeMorgan's theorems states that . Simply stated, this means that logically there is no difference between:
Options
A. a NAND gate and an AND gate with a bubbled output
B. a NOR gate and an AND gate with a bubbled output
C. a NOR gate and a NAND gate with a bubbled output
D. a NAND gate and an OR gate with a bubbled output

9. Which of the examples below expresses the distributive law of Boolean algebra?
Options
A. A ? (B ? C) = (A ? B) + C
B. A + (B + C) = (A ? B) + (A ? C)
C. A ? (B + C) = (A ? B) + (A ? C)
D. (A + B) + C = A + (B + C)

10. The observation that a bubbled input OR gate is interchangeable with a bubbled output AND gate is referred to as:
Options
A. a Karnaugh map
B. DeMorgan's second theorem
C. the commutative law of addition
D. the associative law of multiplication

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