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Question

State True or False
Let A={1,2} and B={2,3,4}, then A × B = B × A ?

A
True
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B
False
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Solution

The correct option is B False
Product of two sets is the set of ordered pairs formed by mapping every element from the first set to every element of the second set.
So, A×B= { (1,2),(1,3),(1,4),(2,2),(2,3),(2,4) }
And B×A= { (2,1),(2,2),(3,1),(3,2),(4,1),(4,2) }
Clearly, A×BB×A

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