Yes.
Any number which can be written down to all its places exactly is rational. A proviso is that the base (most commonly base 2 or base 10) must also be rational. Any number which is the ratio of two rational numbers (such as 1/3, or 186/100) is rational.
1.86 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 186/100. You can simplify this rational fraction if you require. :p>
yes
Yes.
yes
It must be a generalised rational number. Otherwise, if you select a rational number to multiply, then you will only prove it for that number.
24
1.86 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 186/100. You can simplify this rational fraction if you require. :p>
It is a rational number. It can be written as a fraction.
yes
186 = 10111010
Is 12.05 a rational number or irrational number?
1.96 is a rational number
It is a rational number, as it can be written as a fraction.
Yes, the sum is always rational.
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.
As much as, in these days of uncertainty, anything can be anything. As long as the constraints of a rational number are kept to, a rational number will always remain a rational number.
Yes, it is.