Co-Prime Numbers and Twine Prime Numbers

Two relatively prime numbers need not be prime numbers.Is this statement true?

Two relatively prime numbers need not be prime numbers. Is this statement true?

Co-prime numbers is a set of numbers which have 1 as their .......................

Consider the following statements A.The sum of two prime numbers is a prime number. B. The product of two prime numbers is a prime number. Which of these statements is/are correct?

The sum of two prime numbers is always a prime number (True/false).

Which of the following statements are true ? (i) 1 is the smallest prime number . (ii) If a number is prime . It must be odd . (iii) The sum to two prime numbers is always a prime number . (iv) none of these.

The HCF of co-prime numbers 17 and 43 is