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State which of the follwing sets are fin...

State which of the follwing sets are finite sets or infinite. In case of finite set, mention the order cardinal. (i) A=(x:x is a prime number) (ii) `B=(x:x in R, x^(2)-8x-20=0)` (iii) `C={x:x in N, 5x+2=11}`

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(i) Infinite set
(ii) Finite set, n(B)=2
(iii) Finite set, n(C)=1
(iv) Finite set, n(D)=0
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