Find the Numbers Before and After 47990: Sequence Completion

To solve this problem of identifying the predecessor and successor of the given number $47990$, follow these steps:

• Step 1: Find the predecessor of $47990$ by performing the calculation $47990 - 1$.
• Step 2: Compute $47989$ as the result.
• Step 3: Find the successor of $47990$ by performing the calculation $47990 + 1$.
• Step 4: Compute $47991$ as the result.

Consequently, the predecessor is $47899$ and the successor is $47991$. Hence, the correct sequence is $47899, 47990, 47991$.

Therefore, the correct choice from the given options is Choice 2: $47899,47991$.