$25$ is an odd number but it is not a prime number

Q. What is the smallest odd prime? Is every odd number a prime number? If not, give an example of an odd number which is not prime.

Q. The contrapositive of the converse of the statement ''If $x$ is a prime number then $x$ is odd'' is

Q. The contrapositive statement of the statement "If $x$ is prime number, then $x$ is odd" is

Q. If p₁ and p₂ are two odd prime numbers such that p₁ > p₂, then $p_1^2-p_2^2$ is

(a) an even number
(b) an odd number
(c) an odd prime number
(d) a prime number

Q. How many odd numbers are in the following number series, which does not contains just after it an odd number, but contains an even number just before it ?
$35814976159234852$