Find the Predecessor and Successor: Complete the Sequence __, 91, __

To solve this problem, we follow these simple steps to identify the predecessor and successor of the number 91:

• Step 1: Calculate the predecessor of 91. The predecessor of a number is found by subtracting one from it. Therefore, the predecessor of 91 is $91 - 1 = 90$.
• Step 2: Calculate the successor of 91. The successor is found by adding one to the number. Therefore, the successor of 91 is $91 + 1 = 92$.

Now, we can fill in the given sequence with the predecessor and successor:

The sequence becomes: $90, 91, 92$.

Therefore, the solution to the problem is $90, 92$.

In the context of the provided multiple-choice options, the correct choice is option 4, which is $90, 92$.