1) What does the symbol Ø mean? a) NOT b) NOT ZERO c) EMPTY FULL SET d) NULL SET 2) If A = { letters in the word PITY} and G= { letters in the word CITY }, then n(A ∪ G) = a) i, t, y b) p, c, i, t, y c) 4 d) 3 e) 5 3) Which of these Sets is NOT Equivalent: R = {c, a, b}, Z = {a, b, c}, Q = {a, c, e, d}, T = {g, h, i}are _____ a) R b) Z c) Q d) T 4) Which of the Sets are Equal? R = {c, a, b}, Z = {a, b, c}, Q = {a, e, d}, T = {g, h, i} a) R and Z b) R and Q c) Z and T d) Z and Q 5) If A = { 2, 4, 6, 8, 10 } then n(A) =____. a) (a) a set of Whole Number b) (b)8 c) (c) a set of Even Numbers d) (d) 5 e) (e) 12, 14, 16, ... 6) If M = { 2, 3, 4 } and N = { 2, 5 } then M∩N = a) 4 b) {2} c) {3, 4} d) {2, 3, 4, 5} 7) If M = { 2, 3, 4 } and N = { 2, 3, 5, 7 } then M∩N = a) (a) {2} b) (b) {2, 3}  c) (c) {5, 7} d) (d) { 2, 3, 4, 5, 7 } 8) A = {2, 3, 5} and B = { 2, 3, 4 }, then, n(A∪B) is a) (a) 3 b) (b) 4  c) (c) { 2, 3, 4, 4, 5 } d) (d) { 2, 3, 4, 5 } 9) A = {2, 3, 5} and B = { 2, 3, 4 }, then, they are said to be _____  a) (a) Universal Sets b) (b) Disjoint Sets c) (c) Equal Sets d) (d) Equivalent Sets 10) A = {a, c , d} and B = { b, f, e, g }, then, they are said to be _____  a) (a) Universal Sets b) (b) Disjoint Sets c) (c) Equal Sets d) (d) Equivalent Sets 11) If M = { 2, 3, 4 } and N = { 2, 3, 5, 7 } then M∪N = a) (a) {2} b) (b) {2, 3}  c) (c) {5, 7} d) (d) { 2, 3, 4, 5, 7 } 12) If P = {..., -1, 0, 1, 2, 3, 4, ...}, hence P is the set of: a) (a) Q b) (b) W c) (c) I d) (d) Z e) (e) N 13) What character property best describes this item {2, 5} as they are ∈ of ______________{2, 3, 5, 7, 11, 13, …} a) (a) the set of odd numbers b) (b) prime numbers c) (c) odd numbers d) (d) the set of prime numbers 14) The following is defined as; {a, e, i, o, u} a) (a) consonants in the alphabets b) (b) the set of vowels c) (c) vowels in the alphabets d) (d) the set of letters in the alphabets 15) If A = {1, 2, 3, 4} and B = {5, 6, 7, 8} then which one is NOT correct? a) (a) n(A) = 4 b) (b) B ∪ A = {1, 2, 3, 4, 5, 6, 7, 8} c) (c) they are equivalent sets d) (d) A∩B = {0 } e) (d) A∩B = { } 16) If A = {1, 2, 3, 4} and B = {5, 6, 7, 8} then which one is correct? a) (a) they are equal sets b) (b) B ∪ A = {0} c) (c) A∩B = {2, 4, 6, 8} d) (d) A∩B = { } 17) What does the shaded part represent? a) n(X∩Y)' b) X∪ Y c) X∩Y d) n(X)= 18) If X={a, f, t} and Y={s, t, a, g} What would the shaded part represent? a) = {a} b) = {2} c) = {s, t, g} d) = {a, t} e) = {a, s, f, t, g} f) = {a, f} 19) What does the shaded part represent? a) n(X∩Y)' b) X∪ Y c) X∩Y d) n(X)= 20) If X={a, f, t} and Y={s, t, a, g} What would the shaded part represent? a) = {a} b) = {2} c) = {s, t, g} d) = {a, t} e) = {a, s, f, t, g} f) = {a, f} 21) What does the shaded part represent? a) (X U Y)' = elements found in neither X nor Y b) X ∪ Y = all elements found in both X and Y c) X∩Y = common elements found in both X and Y d) n(X)= 22) The Universal where p:1≤ p ≤ 9. X={square nos.} and Y={composite nos.} Which is True? a) (X∩Y)' = elements found in neither X nor Y = {1, 2, 3, 5, 6, 7} b) (XUY)' = elements found in neither X nor Y = { 2, 3, 5, 7} c) (X∩Y)' = elements found in neither X nor Y = {4, 9} d) (XUY)' = elements found in neither X nor Y = {1, 9} 23) What do you think the shaded part means? a) (X∩Y)' b) (X U Y)' c) (X)' d) (Y)' 24) What type of set is G? G = {liquids, solids, gases, plasmas} *****just the names as you see it... a) empty set b) finite set c) infinite set d) None of the above. 25) What type of set is H? H = {..., -3, -2, -1, 0, +1, +2, +3, ...} a) empty b) finite c) infinite d) None of the above. 26) Which of the following sets are finite? a) A={vowels} b) B={days of the week} c) C={primary colors} d) All of the above. 27) Which of the following is an empty (null) set? a) {tiger, lion, puma, cheetah, leopard, cougar, ocelot} b) {a bicycle with more than 2 wheels} c) {prime numbers between 1 and 100} d) All of the above. 28) A number divided by 5 minus 2 gives the result 3. What is the number? a) 15 b) 20 c) 25 d) 30 e) 45 f) 60

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