Question: In a group of 150 people, 90 like reading fiction, 60 like reading non-fiction, and 30 like both. How many like only non-fiction?
Options:
30
60
90
150
Correct Answer: 30
Solution:
The number of people who like only non-fiction is: 60 - 30 = 30.
In a group of 150 people, 90 like reading fiction, 60 like reading non-fiction,
Practice Questions
Q1
In a group of 150 people, 90 like reading fiction, 60 like reading non-fiction, and 30 like both. How many like only non-fiction?
30
60
90
150
Questions & Step-by-Step Solutions
In a group of 150 people, 90 like reading fiction, 60 like reading non-fiction, and 30 like both. How many like only non-fiction?
Step 1: Identify the total number of people who like non-fiction, which is 60.
Step 2: Identify the number of people who like both fiction and non-fiction, which is 30.
Step 3: To find the number of people who like only non-fiction, subtract the number of people who like both from the total number of non-fiction readers: 60 - 30.
Step 4: Calculate the result: 60 - 30 = 30.
Step 5: Conclude that 30 people like only non-fiction.
Set Theory – Understanding the relationships between different groups and how to calculate the number of elements in overlapping sets.
Venn Diagrams – Using Venn diagrams to visualize the distribution of preferences among groups.
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