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Example 6 - Chapter 1 Class 11 Sets - Part 2

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Example 6 State which of the following sets are finite or infinite (ii) {x : x ∈ N and x2 = 4} x2 = 4 x = ± √4 x = ± 2 Thus, x = 2, −2 But x is a natural number (1, 2, 3, 4, 5…) It cannot be a negative number.. Given set = {2}. Since the number of elements of set is countable Hence, it is finite.

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