b.

8.

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

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.