Yes.
Is 12.05 a rational number or irrational number?
1.96 is a rational number
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.
Yes, it is.
It is a rational number, not an integer.
You cannot. There is no way to determine if the number has or has not been rounded and so no way to determine if the number is a terminating, repeating or other form of decimal number. Without that information you cannot tell if it is rational.
139 is a prime number as its only factors are 1 and 139.
139 is a prime number.
It is a rational number. It can be written as a fraction.
139 is a prime number. The only numbers that divide evenly into it are 1 and 139.
yes
139 = CXXXIX
Is 12.05 a rational number or irrational number?
1.96 is a rational number
139 is an integer. The simplest way of expressing an integer as a rational fraction is to write is as a ratio to 1. Thus, 139 = 139/1.Having done that multiply both the numerator (top) and the denominator (bottom) of this fraction by any non-zero integer. You will have an equivalent fraction.
It is a rational number, as it can be written as a fraction.
The factors of 139 are 1 & 139 (it is a prime number).