Find which of the variables x,y,z and u represent rational numbers and which irrational numbers:
`z^2=0.04`

Find which of the variables x,y,z and u represent rational numbers and which irrational numbers: y^2=9

Find which of the variables x,y,z and u represent rational numbers and which irrational numbers: x^2=5

Find which of the variables x,y,z and u represent rational numbers and which irrational numbers: u^2=17/4

In the following equation which variables represent rational numbers and which irrational numbers: z^2=0.09

In the following equation which variables represent rational numbers and which irrational numbers: u^2=15/4

In the following equation which variables represent rational numbers and which irrational numbers: y^2=16

In the following equation which variables represent rational numbers and which irrational numbers: x^2=3

Are the following pairs of statements negations of each other: The number x is not a rational number. The number x is not an irrational number.

Are the following pairs of statements negations of each other: The number x is a rational number. The number x is an irrational number.

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.