Which one of the following is a whole number but not a national number
-12 0 22 3
The number -12 is a whole number but not a natural number.
A whole number is any positive or negative number without any fractions or decimals. A natural number refers to the counting numbers starting from 1, so it does not include zero or negative numbers.
From the given options, the number -12 is a whole number because it is an integer without any fractions or decimals. However, it is not a natural number because it is a negative number.
Thus, the whole number -12 is not a natural number.