**Which of the following statements are true (T) and which are false (F) ?**

**(a) Zero is the smallest natural number. **

It is false because 0 is not a natural number.

**(b) 400 is the predecessor of 399.**

It is false because 400 is the successor of 399 but not the predecessor of 399.

**(c) Zero is the smallest whole number. **

It is true. Whole numbers start from zero.

**(d) 600 is the successor of 599.**

It is true because 599 + 1 = 600.

**(e) All natural numbers are whole numbers.**

It is true because when we add zero to the list of all natural numbers we get all whole numbers.

**(f ) All whole numbers are natural numbers.**

It is false because 0 is a whole number but not a natural number.

**(g) The predecessor of a two digit number is never a single digit number.**

It is false. Let's take an example, predecessor of 10 = 10-1 = 9 which is a single digit number.

**(h) 1 is the smallest whole number.**

It is false because 0 is the smallest whole number.

**(i) The natural number 1 has no predecessor.**

It is false in the sense that predecessor of natural number 1 is whole number 0.

It is true in the sense that 1 does not have any predecessor which is a natural number.

**(j) The whole number 1 has no predecessor.**

It is false. Predecessor of whole number 1 is whole number 0.

**(k) The whole number 13 lies between 11 and 12.**

It is false because there is no whole number between 11 and 12. 13 is successor of 12.

**(l) The whole number 0 has no predecessor.**

It it true because the predecessor of whole number 0 is not a whole number.

**(m) The successor of a two digit number is always a two digit number.**

It is false.

Let's take an example, successor of 99 = 99 + 1 = 100 which is a 3 digit number.