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.

HCF of two co-prime numbers is:

The sum of two irrational numbers is an irrational number (True/false).

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?

Which one of the following statement is true? The sum of two irrational numbers is always an irrational number The sum of two irrational numbers is always a rational number The sum of two irrational numbers may be a rational number or irrational number The sum of two irrational numbers is always an integer

HCF of two numbers is always a factor of their LCM (True/false).

The LCM of two co-prime numbers is their .

The HCF of any two prime numbers a and b, is