**Successor and Predecessor of Natural Numbers**

Natural numbers are a set of positive integers starting from 1 and extending to infinity. Each natural number has a successor and a predecessor, except for the first natural number, which only has a successor. The successor of a natural number is the number that comes immediately after it, while the predecessor is the number that comes immediately before it.

**Successor of a Natural Number (n)**

The successor of a natural number n can be found by adding 1 to it. In other words, the successor of n is n+1. For example:

- The successor of 1 is 1+1=2.
- The successor of 100 is 100+1=101.
- The successor of any natural number n can be calculated by adding 1 to n.

**Predecessor of a Natural Number (n)**

The predecessor of a natural number n can be found by subtracting 1 from it. In other words, the predecessor of n is n-1. However, the first natural number (1) does not have a predecessor since there is no number before it. For example:

- The predecessor of 2 is 2-1=1.
- The predecessor of 100 is 100-1=99.
- The predecessor of any natural number n (except 1) can be calculated by subtracting 1 from n.

**Summary**

In summary, the successor of a natural number n is obtained by adding 1 to it, while the predecessor of a natural number (except 1) is obtained by subtracting 1 from it. The successor of the first natural number (1) is 2, and it does not have a predecessor. The successor and predecessor of a given natural number can be easily determined by performing simple arithmetic operations.

successor _101 and predecessor_99