State whether the following sets are finite or infinite.

(i) {x ∈ N : x is an even prime number}

(ii) {x ∈ N : x is an odd prime number}

(iii) {x ∈ Z : x is even and less than 10}

(iv) {x ∈ R : x is a rational number}

(v) {x ∈ N : x is a rational number}