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Question
Cardinal number of the set A = { x: x is prime number and x < 9} is ____.
Cardinal number of the set A = { x: x is prime number and x < 9} is ____.
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Solution
The correct option is C 4
Given that,
A = { x: x is prime number and x < 9}
Prime numbers less that 9 are 2, 3, 5, 7
⇒A={2,3,5,7}
⇒n(A)=4
4
Given that,
A = { x: x is prime number and x < 9}
Prime numbers less that 9 are 2, 3, 5, 7
⇒A={2,3,5,7}
⇒n(A)=4
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