* Tinkerbell *
New member
There are 36 cards in a deck arranged in the sequence Spades, Clubs, Hearts, Diamonds,
Spades, Clubs, Hearts, Diamonds, etc. Somebody took part of this deck off the top,
turned it upside down and inserted it between two consecutive cards in the remaining
deck. Then four cards were taken off the top, then another four, etc. Until 9 sets of
four cards were made. Prove that in any of these sets of four cards, all the cards are of
different suits.
Spades, Clubs, Hearts, Diamonds, etc. Somebody took part of this deck off the top,
turned it upside down and inserted it between two consecutive cards in the remaining
deck. Then four cards were taken off the top, then another four, etc. Until 9 sets of
four cards were made. Prove that in any of these sets of four cards, all the cards are of
different suits.