Question

*If A = {1,2,3,4,5}, B = {2,4,6,8} then A U B = ?* 1️⃣ {1,2,3,4,5} 2️⃣ { } 3️⃣ {1,2,3,4,5,6,8} 4️⃣ {2,4,6,8}

Answer 1

Answer:

3) {1,2,3,4,5,6,8.}===AUB

Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

If A = {1,2,3,4,5}, B = {2,4,6,8} then A U B =

1. {1,2,3,4,5}

2. { }

3. {1,2,3,4,5,6,8}

4. {2,4,6,8}

CONCEPT TO BE IMPLEMENTED

SET :

A set is a well defined collection of distinct objects of our perception or of our thought to be conceived as a whole

Representation of Set :

A set can be represented in following ways

(i) Statement form method

(ii) Roster or tabular form method

(iii) Rule or set builder form method

EVALUATION

Here it is given that

A = {1,2,3,4,5}, B = {2,4,6,8}

Now we have

A U B

= { x : x ∈ A ∨ x ∈ B }

= {1,2,3,4,5,6,8}

FINAL ANSWER

Hence the correct option is

3. {1,2,3,4,5,6,8}

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