Q. Let P={1,7,8} and Q={−10,7,8}. What is P∪Q?Choices:(A){7}(B){7,8}(C){−10,1}(D){−10,1,7,8}
Concept of Union: Understand the concept of union of sets. The union of two sets P and Q, denoted by P∪Q, is the set of elements which are in P, in Q, or in both P and Q.
Elements of Set P: List the elements of set P.P={1,7,8}
Elements of Set Q: List the elements of set Q. Q={−10,7,8}
Combine Elements: Combine the elements of P and Q without repeating any elements to form the union.P∪Q={1,7,8,−10}Note that 7 and 8 are in both P and Q, but we list them only once.
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