It was earlier studied that the numbers are in an ordered sequence. In this page, the predecessor and successor of a number is explained.

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Whole numbers are ordered in a specific sequence. This is represented by the number line.*Predecessor* is the number prior to a number in the order.*Successor* is the number that follows a number in the order.

The predecessor of `3` is `2`.

The successor of `3` is `4`.

What does the word 'predecessor' mean?

- something that has desired state
- something that is comes before or prior in the order
- something that is comes before or prior in the order

The answer is 'something that comes before or prior in the order'. "pre" means "beforehand" and "decessor" is derived from a word meaning "that departed".

The numbers are ordered `1,2,3,4, cdots`.

Predecessor of a given number is the number that comes before or prior to the given number. The predecessor of `3` is `2`.

The predecessor of `4` is `3`.

What does the word 'successor' mean?

- one who is successful
- something that comes after or follows in the order
- something that comes after or follows in the order

The answer is 'something that comes after or follows in the order'.

The numbers are ordered `1,2,3,4, cdots`.

Successor to a given number is the number that follows the given number. The successor of `3` is `4`.

The successor of `4` is `5`.

**Predecessor: **The number that comes before a given number is the predecessor of the given number. The predecessor is one less than the given number. **Successor: **The number that comes after a given number is the successor of the given number. The successor is one greater than the given number.

*Solved Exercise Problem: *

What is the successor of `9`?

- number-line ends at `9`
- `10`
- `10`

The answer is '`10`'. The number-line continues after `9` with `10, 11, 12, cdots`.

*Solved Exercise Problem: *

What is the predecessor of `13`?

- `12`
- `12`
- `9`

The answer is '`12`'.

*Solved Exercise Problem: *

What is the predecessor of `233`?

- `233`
- `232`
- `232`
- `234`

The answer is '`232`'.

*Solved Exercise Problem: *

What is the successor of `233`?

- `233`
- `232`
- `234`
- `234`

The answer is '`234`'

What is the term to refer to the number that comes before (in the number order) to a given number?

- Pronunciation : Say the answer once

Spelling: Write the answer once

The answer is 'predecessor'.

What is the term to refer to the number that comes after or follows (in the number order) to a given number?

- Pronunciation : Say the answer once

Spelling: Write the answer once

The answer is 'successor'.

*Solved Exercise Problem: *

What is the predecessor of `1`?

- `0`
- `0`
- `1`
- Predecessor does not exist for `1`

The answer is '`0`'.

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