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Total questions: 5
Worksheet time: 2mins
If A = {a,b,c}, B = { a,b,c,d,e} and C = { a, b, c, d, e,f}, find {A U B} n {A U C}
(A) { a,b,c, d}
(B) {a,b,c,d,e}
(C) { a,b,c,d,e,f}
(D) {a,b,c}
In a class of 80 students, every Students had to study Economics or Geography, or both Economics and Geography. If 65 students studied Economics and 50 studied Geography, how many studied both subjects?
(A). 15
(A). 30
(C). 35
(D). 45
P = { 2,1,3,9,½}, Q = { 1,2½,3,7} and R = { 5,4,2½}
find PUQUR
(A). {2½}
(B). {1,9}
(C). { 1,2,3,4,5,6,7}
(D). { ½, 1,2,2½, 3, 4, 5, 7,9}
Let U = {1,2,3,4}, P = {2,3}and Q = {2,4}. What is (PnQ}'
(A). {1,2,3}
(B). { 1,3,4}
(C). {1,4)
(D). {1,3}
A and B are two sets. The number of elements in AUB is 49, the number in A is 22 and the number in B is 34.
How many elements are in AnB?
(A). 105
(B). 27
(C). 15
(D). {7}
