Question 9 of 47beginner💡 UnderstandShort Answer2 marks
In the following, state whether A = B or not:
(i)
A = {a, b, c, d}; B = {d, c, b, a}
Answer
Yes, A = B
(ii)
A = {4, 8, 12, 16}; B = {8, 4, 16, 18}
Answer
No, A B
(iii)
A = {2, 4, 6, 8, 10}; B = {x : x is positive even integer and x 10}
Answer
Yes, A = B
(iv)
A = {x : x is a multiple of 10}; B = {10, 15, 20, 25, 30, ...}
Answer
No, A B
Explanation
This question tests the fundamental concept that two sets are equal if and only if they have exactly the same elements. The order of elements in a set does not matter. Students must check if every element of A is in B and every element of B is in A.