The problem asks us to identify the operations that should be performed in areas 'A' and 'B' of the flowchart in Figure 1 to correctly calculate the average of 25 exam scores.

1. Problem Description

The problem asks us to identify the operations that should be performed in areas 'A' and 'B' of the flowchart in Figure 1 to correctly calculate the average of 25 exam scores.

2. Solution Steps

The flowchart in Figure 1 calculates the average of 25 exam scores.

- The flowchart starts by initializing $I = 1$, $N = 25$, and $SUM = 0$.

- The flowchart inputs the $I$'th exam score $X$.

- In area 'A', we should update the $SUM$ by adding the current exam score $X$ to it. This is done by $SUM = SUM + X$.

- We then increment $I$ by 1, so $I = I + 1$.

- The loop continues until $I > N$ (i.e., until we have processed all $N=25$ exam scores).

- In area 'B', we need to calculate the average of the exam scores.

Since the sum of the exam scores is stored in $SUM$ and the number of exam scores is $N = 25$, we can calculate the average using $AVG = SUM / N$.

Therefore, the operations performed in areas 'A' and 'B' should be $SUM = SUM + X$ and $AVG = SUM / N$ respectively.

3. Final Answer

(1) Sum = Sum + x, Avg = Sum/N