Mathematics

Problem

Let

S = \{1, 2, 4, 5, 9, 12\}

and

T = \{2, 5, 9\}

. a. Find:

n(S)

b. Find:

n(T)

. c. Decide whether the statement is true or false:

4 \in S

d. Decide whether the statement is true or false:

4 \in T

e. Decide whether the statement is true or false:

1 \notin T

f. Decide whether the statement is true or false:

T \subseteq S

g. Decide whether the statement is true or false:

T \subset S