3. Write the Cardinal number of the set given below:
a) A={×: × is an odd prime number,
×<23}.​

2 thoughts on “3. Write the Cardinal number of the set given below:<br /> a) A={×: × is an odd prime number,<br />×<23}.​”

1. Answer:

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2. Answer:

   Correct option is

   B

   7

   The cardinal number

   n(A)={x:x is an odd prime number less than 20}

   ={3,5,7,11,13,17,19}

   n(A)=7

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