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        riddles >> hard >> Product and Sum problem
        
(Message started by: kaykay on Dec 3^rd, 2006, 2:47am)

Title: Product and Sum problem
Post by kaykay on Dec 3^rd, 2006, 2:47am

2 numbers are chosen. Person P is given the product of them. Q is given the Sum of those 2 numbers.
On asking what if they knew the two numbers here is what hapnd:

P says: No, I don't know the 2 numbers.
Q says: I knew that
P says: Now I know the 2 numbers.
Q says: I also know the 2 numbers.

what are the 2 numbers?
choices:
a> 8 11
b> 3 14
c> 7 4
d> 3 5

I am not very sure about the last two choices. But I believe the answer is one of a or b.
Can someone tell me how to solve this?

Title: Re: Product and Sum problem
Post by THUDandBLUNDER on Dec 3^rd, 2006, 3:52am

This might help:

http://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board=riddles_hard;action=display;num=1100930971