Question

Write the number which is a whole number but not a natural number.

Answer 1

Step $1$; Find the number which is a whole number but not a natural number.
Step $2$; Write whole numbers,

Whole numbers are $0,1,2,3,4.........$

Step $3$; Write natural numbers,

Natural numbers are $1,2,3,4,5.........$

Step $4$; Observation,

On keen observation, we notice that $0$ is the number which is a whole number but not a natural number.

Hence, the number is $0$