The sum of two rational numbers is a rational number.

3 is a rational number.

Sum of two natural numbers is a rational number.

Check the validity of the statement given below by the method given against it. The sum of an irrational number and a rational number is irrational.

Product of two rational numbers is

Which one of the following statement is true? (i) The sum of two irrational numbers is always an irrational number. (ii) The sum of two irrational numbers is always a rational number. (iii) The sum of two irrational numbers may be a rational number or irrational number. (iv) The sum of two irrational numbers is always an integer.

Given that the product of two rational numbers is rational, and suppose a and b are rationals, what can you conclude about ab ?

List ten rational numbers.

Every rational number is:

Which one is an rational number?