Question

If A{2, 3,4,5} and B{4,5, 6,7} the write
a) A U B

Answer 1

Answer:

If A{2, 3,4,5} and B{4,5, 6,7}  then AUB={2,3,4,5,6,7}.

Step-by-step explanation:

Let A and B be any two sets. The union of A and B is the set that consists of all the elements of A and all the elements of B, the common elements being taken only once.

If A{2, 3,4,5} and B{4,5, 6,7}  

AUB = {2,3,4,5,6,7}

Answer 2

Answer:

A U B = {2, 3, 4, 5, 6, 7}

Step-by-step explanation:

set A has the numbers 2, 3, 4, 5

set B has the numbers 4, 5, 6, 7

so all numbers in A U B is 2, 3, 4, 5, 4, 5, 6, 7

but we consider each number only once in a set,

So,

A U B = {2, 3, 4, 5, 6, 7}

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