A card player holds 13 cards of four suits, of which seven are black and six are red. There are twice as many hearts as clubs and twice as many diamonds as hearts. How many spades does he hold? Choose one:
A) 6
B) 5
C) 8
D) 2
E) 9
A   6   The player holds 1 club, 2 hearts and 4 diamonds.   6s he holds 13 cards (or seven black cards), it follows that there must be 6 spades.
<result>A</result>
A card player holds 13 cards of four suits, of which seven are black and six are red. There are twice as many hearts as clubs and twice as many diamonds as hearts. How many spades does he hold?