Let and . How many elements does…

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let

A = \{x \in \mathbb N \mid x < 4\}

and

B = \{y \in \mathbb N \mid 2 \le y \le 4\}

. How many elements does

A \times B

contain? (a) 12 (b) 9 (c) 8 (d) 6

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