Question

The sum of successor and predecessor of $1000$ is _____

Answer 1

Step 1: Successor and Predecessor

Successor

Successor is the term that comes right after a particular number or term or a value. Suppose, $n$ is a whole number, then the successor of $n$ is $n+1$.

The other terminologies used for successor are next value.

Predecessor

A predecessor is a value that comes right before a particular value.

Suppose a value is $x$, then the predecessor of $x$ will be $x–1$.

Thus, to find the predecessor of any value we have to subtract the given value from $1$.

Step 2: Find the successor of $1000$

Given number: $1000$

Then, the Successor of $1000$ i.e., the number after the number $1000$ is $1001$.

$1000+1=1001$

∴ The successor of $1000$ is $1001$.

Step 3: Find the predecessor of $1000$

The Predecessor of $1000$ i.e., the number before the number $1000$ is $999$.

$1000–1=999$

∴ The predecessor of $1000$ is $999$.

Step 4: Find the sum of successor and predecessor of $1000$

The sum of successor and predecessor of $1000$ can be calculated as

$=1001+999$

$=2000$

Hence, the sum of successor and predecessor of $1000$ is $2000$.