Find the Numbers: Complete the Sequence __, 20000, __

To solve this problem, we need to find the numbers directly before and after 20000 in a sequence of consecutive numbers.

• Step 1: Determine the predecessor.

We find the predecessor by subtracting 1 from the given number:

$20000 - 1 = 19999$

• Step 2: Determine the successor.

We find the successor by adding 1 to the given number:

$20000 + 1 = 20001$

Having computed both the predecessor and successor, we can conclude that the numbers completing the sequence are:

$19999, 20001$