Question

Cardinal number of the set A={-2, -1,0,1,2} is

• A. 5
• B. 4
• C. -2
• D. 2

Answer 1

The Correct Option is A

To solve this problem, we need to determine the cardinal number of the given set \( A = \{-2, -1, 0, 1, 2\} \).

1. Understanding Cardinal Number:
The cardinal number of a set refers to the number of distinct elements present in that set.

2. Counting the Elements:
The set \( A \) contains the elements: -2, -1, 0, 1, 2
So, total elements = 5

3. Evaluating the Options:
(1) 5 – Correct
(2) 4 – Incorrect
(3) -2 – Incorrect (cardinal number is never negative)
(4) 2 – Incorrect

Final Answer:
The correct option is (A) 5.