Question 14: Let A = {x ∈ N|1990 ≤ x ≤ 2009}. What is the number of elements of set A?

Quiz Question 14: Let A = {x ∈ N|1990 ≤ x ≤ 2009}. What is the number of elements of set A?





Think and answer the question before looking at the answer

The elements of the set A are the sequence of consecutive natural numbers from 1990 to 2009 .

So the number of elements of set A is 2009 – 1990 + 1 = 20.

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