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Professor and Students (Posted on 2003-04-28) Difficulty: 4 of 5
A Professor asked four students how long each of them had been studying.

One of the students replied: “We have all been studying a whole number of years, the sum of our years of studying is equal to the number of years you have been teaching and the product of our years of studying is 180”.

“I’m sorry”, replied the Professor after some thought, “but that doesn’t give me enough information”.

“Yes, you’re right”, agrees another of the students. “But if we told you that one of us were into double figures in our years of study, then you could surely answer your question”.

How long had each of the four been studying ?

See The Solution Submitted by Ravi Raja    
Rating: 3.0000 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
answer Comment 10 of 10 |
The respective period of st udyof the 4 students(in years) are or 2, 3, 3 and 10.
  Posted by K Sengupta on 2007-11-23 03:54:58
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