Does -20 belong to whole numbers integers and rational?

1 Answer
Nov 27, 2016

#-20# is in all those sets. See explanation.


A whole number (also called integer) is a number which has no fraction part (i.e. it has only digits and may also have a minus sign).

A rational number is any number which can be represented as a quotient of 2 integer numbers. This number can be written as #-20=(-20)/1#. So it is a rational number