Find the Numbers Before and After 10199: Sequence Completion

Let's find the numbers that complete the sequence.

• Step 1: Find the predecessor of 10199
  We apply the formula for predecessor: $10199 - 1 = 10198$
• Step 2: Find the successor of 10199
  We apply the formula for successor: $10199 + 1 = 10200$

Therefore, the numbers that complete the sequence are the predecessor $10198$ and the successor $10200$.

The correct answer according to the options is: $10198, 10200$.