An unbaised coin is tossed. If the result is a head, a pair of unbaised die is rolled and the number obtained by adding the numbers on two faces is noted. If the result is a tail, a card from a well shuffled pack of 11 cards, 2, 3 , 4... 12 is picked and the number on the card is noted. What is the probability that the noted number is 7 or 8?