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Is two thirds a rational number?
Yes, two thirds is a rational number. This is because it a is recurring decimal and can be expressed as a fraction. All fractions are rational numbers and all recurring decimals are rational numbers.
Every positive rational number and its negative pair?
Every positive rational number and its negative are the two square roots of the same positive rational number.
Is two thirds a rational or an irrational number?
2/3 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Is negative 6 a rational number?
Yes. A number is called a rational number if it can be written as the ratio of two integers. (-6) and 1 are both integers. -6 = -6/1. Therefore -6 is a rational number. Rational numbers can be either positive or negative (zero is also a rational number).
Is 21.6 repeating rational?
It would be 21 and two thirds, so it can be expressed as a fraction and is therefore rational.
