1. Which statement is TRUE?

A. The opposite of 15 is 15

B. The absolute value of 8 is -8

C. The absolute value of 12 is equal to the opposite of 12

D. The opposite of -20 is equal to the opposite value of -20

2. If M represents the set of even numbers, then which of the following is CORRECT?

A. { } ⊆ M

B. 200 ∉ M

C. { 1, 3 } ⊆ M

D. { 2, 4, 5 } ⊂ M

3. How many subsets does the set containing 10 elements have?

A. 128

B. 256

C. 512

D. 1024

4. What does the given statement below mean?

K = { }

A. Set K has one element 

B. Set K has infinite elements

C. The cardinality of set K is zero

D. Set K contains all the elements under consideration