Question

If $A=\{x:x$ is a member of family of circles$\},$ $B=\{x:x$ is a vowel in English alphabet$\}$, then

• A. $A$ is finite but $B$ is not
• B. $A$ is infinite but $B$ is not
• C. both $A$ and $B$ are finite
• D. neither $A$ nor $B$ are finite

Answer 1

The correct option is B $A$ is infinite but $B$ is not

$A$ is an infinite set as we can have infinite numbers of circles which is a member of a family of circles,
While $B$ is a finite set such that $B=\{a,e,i,o,u\}.$