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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). - Mathematics

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Question

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

Sum
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Solution

It is given that set A has 3 elements and the elements of set B are 3, 4, and 5.

⇒ Number of elements in set B = 3

= Number of elements in (A × B)

= (Number of elements in A) × (Number of elements in B)

= 3 × 3 = 9

Thus, the number of elements in (A × B) is 9.

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Chapter 2: Relations and Functions - Exercise 2.1 [Page 33]

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NCERT Mathematics [English] Class 11
Chapter 2 Relations and Functions
Exercise 2.1 | Q 2 | Page 33
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