What is the sequence of dequeued values if the following operations are performed on an initially empty queue: enqueue(8) -> dequeue -> enqueue(1) -> enqueue(2) -> dequeue -> enqueue(6) -> dequeue -> dequeue?

The sequence of dequeued values in this scenario is 8126. The correct answer is option A) 8126.
To determine the sequence of dequeued values, we follow the given operations on the initially empty queue:
## 1. Enqueue (8):

Upon enqueueing the value 8, it is added to the queue.
## 2. Dequeue:

The first value in the queue is dequeued, which is 8.
## 3. Enqueue (1):

The value 1 is added to the queue.
## 4. Enqueue (2):

The value 2 is added to the queue.
## 5. Dequeue:

The first value in the queue is dequeued, which is 1.
## 6. Enqueue (6):

The value 6 is added to the queue.
## 7. Dequeue:

The first value in the queue is dequeued, which is 2.
## 8. Dequeue:

The first value in the queue is dequeued, which is 6.
Therefore, the sequence of dequeued values is 8126 as per the given operations.