Read a Venn diagram: how many are in only A or only B (sum of two single regions)

This type of question, asked 3 times: 12 Sep 2024 S3, 13 Sep 2024 S3, 23 Sep 2024 S3. All 3 questions below, oldest first.

Try each one first, then open its answer.

Question 1
12 Sep 2024 S3
24 $How many people like either only cars or only Volkswagen vehicles as per the given Venn diagram?$
Tap an option to check your answer.
Question 2
13 Sep 2024 S3
23 $How many people play either only volleyball or only chess as per the given Venn diagram?$
Tap an option to check your answer.
Question 3
23 Sep 2024 S3
9 $How many people like either only spicy or only sweet as per the given Venn diagram?$
Tap an option to check your answer.

Question 1