Dr Harve has found that 30 % of his clients have eye problems, 10 have hearing and 5 have both.. are an (eye problem and hearing problems) independent or dependent? why

T.O Leafs is playing Montreal in Stanley cup finals. team to win 4 first wins the cup. If the prob of T.O winning (1) game is .55 determine the prob that

a) T.O wins 4 straight

b) Montreal wins the cup ( In general)