Not necessarily. All rational numbers are real, not all real numbers are rational.
Sometimes. The number '4' is real and rational. The number 'pi' is real but not rational.
A real number dosen't have to be a rational number as a real number can be rational or irrational i.e the root of 2 is irrational and real. So is (pi).
Decimals are real. They can be rational or irrational.
A real number which is not a rational number is an irrational number.
Yes it is, but not every real number is a rational number
Yes. -3 is both rational and real. -3 is an integer. All integers are rational numbers. All rational numbers are real numbers. Thus -3 is a rational number and a real number.
Yes, 34 is a real and rational number
Real number, Rational Number
Every integer is also a rational number and a real number.
Infinitely rarely, a real number is also a rational number. (There are an infinite number of rational numbers, but there are a "much bigger infinity" of real numbers.)
The set of rational numbers is a subset of the set of real numbers. That means that every rational number is a real number, but not every real number is rational. The square root of 2 is an example of a real number that isn't rational; that is, it can't be expressed as the quotient of two integers.