a) Which of the following sets are equal? A = {a, b, c, d}, B = {d, e, a, c}, C
ID: 3577120 • Letter: A
Question
a) Which of the following sets are equal?
A = {a, b, c, d}, B = {d, e, a, c}, C = {d, b, a, c}, D = {e, a, c, d}
b) For the sets A, B, C and D above, find
A È B =
A Ç B =
A È D =
A Ç D =
A – B =
A – C =
C – A =
c) Let S = {x | 3 £ x < 5}
Let U be the set of all real numbers
Find the complement of S, i.e. find Sc
d) Let the universal set be the set R of all real numbers. Let A = {x ÎR | 0 < x £ 3}, B = {x ÎR | 1 £ x £ 5}. Find each of the following:
A È B =
A Ç B =
Ac =
Bc =
Ac Ç Bc =
Ac È Bc =
(A È B) c =
(A Ç B) c =
Explanation / Answer
a)
A = {a,b,c,d}
B= {d,e,a,c}
C= {d,b,a,c}
D= {e,a,c,d}
Equal sets are those sets which have equal number of elements and same value, doesn't matter in which order.Here
A and C are equal sets as they both have four same elements which are a b c d. Set B and D are equal sets as they have four same elemenst which are a c d e.
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