Answer:
<em>Decimal numbers can't be the whole number but the whole number is always included in Decimal Numbers.</em>
Further,
Whole Number: It is an all-natural number including zero (0).
Example, 0, 1, 2, 3, 4, 5,.....
It is an infinite but countable number.
Decimal Number: It includes integer as well as non-integer numbers. It is defined as the number whose whole part and fractional part are separated by the decimals.
Example, 1.545, -58.1, 454,1041115.0001, etc.