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Subjects
Class 10MathematicsSetsOperations on Sets (Union, Intersection, Difference)EasyLevel 16

If A = {1, 2, 3} and B = {3, 4, 5}, what is A ∪ B?

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Answer and explanation

Correct answer: {1, 2, 3, 4, 5}

The union A ∪ B is the set of all elements that belong to A or to B or to both. Combining A = {1, 2, 3} and B = {3, 4, 5} gives 1, 2, 3, 4, and 5. The common element 3 is written only once because a set does not repeat elements. Therefore, A ∪ B = {1, 2, 3, 4, 5}.

Tags

setsunionset-operationsbasic-setsOperations on Sets (UnionIntersectionDifference)operations on sets union intersection differenceMathematicsClass 10 MCQ

Frequently asked questions

What is the correct answer to this question?

{1, 2, 3, 4, 5}

Why is this the correct answer?

The union A ∪ B is the set of all elements that belong to A or to B or to both. Combining A = {1, 2, 3} and B = {3, 4, 5} gives 1, 2, 3, 4, and 5. The common element 3 is written only once because a set does not repeat elements. Therefore, A ∪ B = {1, 2, 3, 4, 5}.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Sets. Topic: Operations on Sets (Union, Intersection, Difference).

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