Re: Daily question

Posted by deepti on Feb 28, 2009; 12:49pm
URL: http://discussion-forum.276.s1.nabble.com/Daily-question-tp2328964p2400629.html

(a)two dice r thrown.let A  be d event dat 4 comes on first die

let B  d evnt dat sum is 6.

A={(4,!) (4,2) (4,3) (4,4) (4,5) (4,6)}
B={4,2) (2 4) (5,1) (1 5) (3 3)}

P(B/A)=1/6

P(B/ACOMPLEMENT)=2/15

p(b/a)+p(b/a cmplmnt) is nt equal to 1


(b) suppose a coin and a die r thrown.let A  be d evnt dat head comes up

let  B be d evnt dat eve no comes up.

sample space=h1,h2,h3,h4,h5,h6,t1,t2,t3,t4,t5,t6


p(b/a)=1/2

p(b/acmplemnt)=1/2

p(b/a)+p(b/a cmplmnt)=1