I have a brain teaser book. So here is one.
Find the Error
A coffee company made a survey of the number of people who drink tea and coffee. An investigatior handed in the following report to the president of the company.
Number of people interviewed..............................100
Number of people who drink coffee.......................78
Number of people who drink tea............................71
Number of people who drink both coffee and tea.....48
Number of peopl who drink neither tea or coffee.....0
When the president read the report, he noticed a mistake and fired the interviewer. What was the error?
Find the Error
A coffee company made a survey of the number of people who drink tea and coffee. An investigatior handed in the following report to the president of the company.
Number of people interviewed..............................100
Number of people who drink coffee.......................78
Number of people who drink tea............................71
Number of people who drink both coffee and tea.....48
Number of peopl who drink neither tea or coffee.....0
When the president read the report, he noticed a mistake and fired the interviewer. What was the error?