Sets, Subsets and Intervals — Quiz

Which of these is a set?

A The multiples of

4

less than

30

B The beautiful flowers in a garden

C The clever students of a school

D The difficult questions in a test

Write

\{x : x \in \mathbf{Z}, -2 \le x < 3\}

in roster form.

A

\{-1, 0, 1, 2\}

B

\{-1, 0, 1, 2, 3\}

C

\{-2, -1, 0, 1, 2\}

D

\{-2, -1, 0, 1, 2, 3\}

How many subsets does a set with

6

elements have?

A

32

B

64

C

12

D

36

Which interval is

\{x : -3 < x \le 7\}

?

A

(-3, 7]

B

[-3, 7)

C

(-3, 7)

D

[-3, 7]

Let

A = \{2, 4, 6\}

. Which statement is true?

A

\varnothing \in A

B

\{4\} \in A

C

\{2, 5\} \subset A

D

\{4\} \subset A

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