Interger numbers: are whole numbers (numbers without fractional part). Can be negtive and possitive numbers.
Whole numbers: Positive whole numbers
Rational numbers: A number that can be made by dividing two intergers. A number that can be written as a fraction
As in the given numbers not all are whole numbers it can not be intergers or whole.
All the given numbers can be written as fractions:
[tex]\begin{gathered} 3.4=\frac{34}{10}=\frac{17}{5} \\ \\ -2=-\frac{2}{1} \\ \\ 3=\frac{3}{1} \\ \\ -1.2=-\frac{12}{10}=-\frac{6}{5} \end{gathered}[/tex]Then, all are rational numbers
