The 97 rational numbers 49/1, 49/2, 49/3, ..., 49/97 are written on a blackboard.
Two of the above numbers X and Y are chosen and replaced by X*Y-X-Y+1.
The procedure is repeated until a single number Z(say) remains on the board.

Determine the possible values of Z.

(In reply to Two special results by Charlie)

What is the meaning of those weird numbers?

Posted by Ady TZIDON on 2016-03-20 11:44:47