A game is played by players taking turns toss a die . If a player gets 2,3,4 or 5 , then it would be his first score and the next player takes over . If the score is 1 or 6 , the player is given an extra toss and his score would be the sum of the two scores obtained . Events A and B are defined as follows .

A=The score is 5,6,7,8 or 9 .

B=The player tosses twice .

Show that p(A)=1/3 . Find P(B) and P(AnB)