JEE MATHEMATICS MCQ: RELATIONS

1 Easy

1 of 1

Understanding +4 | -1

A = \left\{ {2,4,5} \right\},B = \left\{ {7,8,9} \right\}

, then

n\left( {A \times B} \right)

is equal to:

View answer and explanation

Correct option: B

The correct answer is 9 because the number of elements in the Cartesian product

A \times B

is the product of the number of elements in

A

and

B

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