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If the set A has 3 elements and the set B = {3, 4, 5}, then find the number of elements in (A×B).

Q2  If the set A has 3 elements and the set B = {3, 4, 5}, then find the number of
        elements in ( A \times B ).

Answers (1)
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It is given that set A has 3 elements and the elements in set B are 3 , 4 , and 5
Therefore, the number of elements in set B is 3
Now,
Number of elements in (A \times B)
                                     = ( Number of elements in set A ) \times ( Number of elements in set B)
                                     = 3 \times 3 
                                     = 9
Therefore, number of elements in (A \times B) is 9

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