MELC101Q-Sets

What is a set with no elements called?

• null set

• cardinality of set

• subset

• universal set

Which of the following is NOT a subset of A = {1, 2, 3}

• { }

• {1,2,3,4}

• {1}

• {1, 2}

Given A = {a, b, c, d, e} and B = {a, c, e}, which of the following symbols will make the statement "B ___ A", true?

• ∈

• ∉

• ⊆

• ⊄

What is A - B, if A = {a, b, c} and B = {a, c, e} ?

• {a}

• {b}

• {c}

• {e}

How many subsets do A = {a, m, s} have?

• 1

• 2

• 8

• 16

What is X ∪ Y if X = {1, 5, 7, 10} and Y = {6, 7, 8, 10} ?

• {7, 10}

• {2, 3, 4, 9}

• {1, 5, 6, 7, 8, 10}

• {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

What is the cardinality of the set of colors of a rainbow?

• 5

• 6

• 7

• 8

Which of the following shows the "set of counting numbers between 3 and 7?

• {3, 4, 5, 6}

• {4, 5, 6, 7}

• {3, 4, 5, 6, 7}

• {4, 5, 6}

Given C is a set of letters in the word "Mathematics", D is a set of vowels in the English alphabet, and E is a set of letters in the word "care". What is C ∩ D ∩ E?

• {a, e, i, o, u}

• {a, e}

• {m, t, h, m, c, s, r}

• {i}

Given set U is the set of letters in the English alphabet and A is a set of letters from K to Z. What is the complement of set A?

• {a, e, i, o, u}

• {b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y, z}

• {a, b, c, d, e, f, g, h, i, j}

• {k, l, m, n ,o, p, q, r, s, t, u, v, w, x, y, z}