Posted by **Amanda** on Wednesday, March 3, 2010 at 9:24pm.

When Professor Sum was asked by Mr. Little how many students in his classes, he answered. “All of them study either languages, or not at all. One-half of them study languages only. One-fourth of them study French, one-seventh study physics only, and 20 do not study at all.” How many students does Professor Sum have?

## Answer this Question

## Related Questions

- Brain Teaser - When Professor Sum was asked by Mr. Little how many students were...
- math - When Professor Sum was asked by Mr. Little how many students were in his ...
- Math - In a group of 40 students, all students study maths, 28 study biology and...
- math - 28 students,all of whom study either science,language or both.18 ...
- statistics - A sample of the number of study per week of college students is ...
- statistics - Among the 500 first year students of college, 270 students study ...
- English - Students, who study hard, should do well on the test. There should be ...
- Math - Probabilities - There are a total of 116 foreign language students in a ...
- Part of Essay - Studying in the USA, I believe that I am not only getting an ...
- Math - There are a total of 103 foreign language students in a high school where...