b.

8.

A variable is a quantity which can change by taking on the value of any constant in the

numbering system. At one specific time, a variable can have the value of one constant a

later time, it can take on the value of some other constant. Since there are only two

possible constants in Boolean algebra, a variable can take on either of only two possible

states, 0 or 1.

In Boolean algebra, the two possible values for any variable are

and

.

0

9.

The two possible constants used in Boolean algebra are

1

a. 00 and 10.

b. binary and base 2.

c. true and false.

d. 0 and 1.

d.

10.

A truth table is a chart of a logic function which lists all possible combinations of input

values and indicates the true output value for each input combination.

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