First, let's identify the values for each region in the Venn diagram based on the labels and the given information:

Here's a step-by-step solution to the Venn diagram problem.

First, let's identify the values for each region in the Venn diagram based on the labels and the given information:

• Number of pupils who like only Physics (P only): 10
• Number of pupils who like only Mathematics (M only): 20
• Number of pupils who like only Kinyarwanda (K only): 60
• Number of pupils who like Physics and Kinyarwanda but not Mathematics ($P \cap K \text{ only}$): $x$
• Number of pupils who like Mathematics and Kinyarwanda but not Physics ($M \cap K \text{ only}$): $x