WAEC SSCE - General Mathematics - 2009…

Question 1 Report

Two sets are disjoint if

they are both empty

their union is an empty set

their intersection is an empty set Correct answer

one of them is a subset of the other

Answer Details

Two sets are said to be disjoint if their intersection is an empty set. In other words, if there are no common elements between the sets, they are said to be disjoint. For example, the sets {1,2,3} and {4,5,6} are disjoint since their intersection is an empty set {} or ∅. On the other hand, the sets {1,2,3} and {2,3,4} are not disjoint since they have elements in common, namely 2 and 3.

Read lesson note on Sets (WAEC)

Read lesson note on Sets (JAMB)






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WAEC SSCE - General Mathematics - 2009 (Objective)