S 2

• because element 1 in B is also in A

• because it’s the only number in B

• because element 1 is common

• because it makes sense

1.     What are the subsets of Set A = {1, 2}?

• {1, 2}, {1}, {2}

Which of the following is a subset of A= {1,2,3}?

• {0}

• {0,1}

• {1,2}

• {2,3,4}

Given the set of letters in the word “mathematics”, what is the cardinality of the given set?

• 11

• 8

• 6

• 4

Which of the following is a subset of {1, 2}?

• {3}

• {3, 4}

• {0}

• { }

Which of the following sets has the cardinality equal to 5?

• Set A is the set of counting numbers less than 5.

• Set B is the set of letters in the word “RACER”.

• Set C is the set of positive multiples of 5.

• Set D is the set of names of the fingers.

Which symbol represents A union B?

Which symbol represents A intersection B?

Which symbol represents the difference between and B?

• {1, 2, 3, 4, 5, 6, 7}

• {1, 3, 5, 7}

• {1, 2, 3, 4, 5, 7, 8}

• {1, 3, 4, 5, 7, 8}