|
|
Puzzles The highest number? Using the three numbers 7, 11 and 17 and only addition, what is the highest number that cannot be made up?
i.e. if  , what is the highest integers that is not in A? | |
Social Bookmarking    
Comments | Andy |  06:38:40, 16 Mar 08 |  Professor Maths
Group:Administrator
Points: 1100
Posts: 1015
Warn level: 0
| Depends what you mean by small! It is less than 100 
| | | | terveloc | 20:09:06, 15 Mar 08 |  Newbie
Group:Members
Points: 0
Posts: 5
Warn level: 0
| ah, hold on...we require r,s,t >=0...i'll think about it more.
However, i imagine that if a unique upper bound exists, it must be pretty small.
| | | | terveloc | 20:06:01, 15 Mar 08 | Newbie
Group:Members
Points: 0
Posts: 5
Warn level: 0
| Any integer can be made.
More precisely, the choice (n, n, -n) for the integers (r, s, t) produces x = n, for any integer n.
| | |
|
