Two magicians A and B perform the following trick:

A leaves the room and B chooses 4 members from the audience at random. Each member chooses a card numbered from 1 to 100 (each chooses a different card) and after B has seen their cards he chooses a card from the remaining deck of cards. The 5 chosen cards are shuffled by an audience member and handed to A who just returned to the room. Prove that A is able to figure out which cards each member picked. Consider that the chosen members form a row and e.g. the leftmost member picks the first card and the rightmost member (B) picks the last card.

(In reply to re: Stage performance by atheron)

Thank you for this extra info.  It won't help me, but others in 'the wings' may profit from it.

BTW, good to see the acknowledgement from whence it was derived.

Posted by brianjn on 2007-05-12 08:57:16