### Given Data:
– Total examinees = 1350
– Passed in Accounts (\(A\)) = 700
– Passed in Economics (\(E\)) = 600
– Passed in Statistics (\(S\)) = 350
– Failed in all subjects = 50
– Passed in Economics and Statistics (\(E \cap S\)) = 200
– Passed in Accounts and Statistics (\(A \cap S\)) = 150
– Passed in Statistics only = 50

### Calculations:

1. **Total Passed in at least one subject**:
\[
\text{Total passed} = 1350 – 50 = 1300
\]

2. **Using Venn Diagram and Principle of Inclusion-Exclusion**:

\[
|A \cup E \cup S| = |A| + |E| + |S| – |A \cap E| – |E \cap S| – |A \cap S| + |A \cap E \cap S|
\]

Let’s denote \( x = |A \cap E \cap S| \).

3. **Substitute given values**:

\[
1300 = 700 + 600 + 350 – |A \cap E| – 200 – 150 + x
\]

Simplify the equation:

\[
1300 = 1650 – |A \cap E| – 350 + x
\]

\[
1300 = 1300 – |A \cap E| + x
\]

\[
0 = – |A \cap E| + x
\]

\[
x = |A \cap E|
\]

To find \( |A \cap E| \):

4. **Determine students passing only Economics**:

From the image:
\[
\text{Students passing Economics only} = 600 – 200 – x = 450
\]

5. **Determine students passing only Accounts**:

From the image:
\[
\text{Students passing Accounts only} = 700 – 150 – x = 550
\]

### Correct Results:

1. **Passed in at least one subject**:
\[
1300
\]

2. **Passed in all three subjects**:
\[
50
\]

3. **Passed in Economics only**:
\[
450
\]

4. **Failed in Accounts**:
\[
1350 – 700 = 650
\]