Rational numbers can be written as a ratio. They can be named as fractions and/or decimals.
It is false.
Here we go again ... a yes/no question asking for a true/false answer.Every rational number can be written as a fraction if you want to, even thougha lot of rational numbers are whole numbers that don't have to be written asfractions.
It is true.
Yes, it is true.
It is true and false. It cannot be proved.
It depends, many people do count 0 as a natural number, but MOST do not. So for most HS text book, the answer is NO, all whole numbers are not natural numbers and the reason is 0 is a whole number but not a natural number.