A speaks truth in 70% cases and B in 80% cases. What will be the probability that they will contradict each other in describing a single event?
for A Pa(T)= .7 ;; probability of truth Pa(L)= .3 ;; probability of lie
for B ,, Pb(T)= .8 Pb(L)= .2
for contradiction probability = Pa(T)*Pb(L) + Pa(L)*Pb(T) = .7*.2 + .3*.8
= .38
3 red, 2 white and 3 green balls are available in a bag. 2 balls are drawn one by one from the bag.
What will be the probability of one ball is white & other is green?
There are two bags. First contain 10 white balls and other contain 8 red balls. One ball from any bag shifted to other bag at random. What will be the probability the second ball taken after first event would be red ? First event is to drawn first ball.
What will be the probability to form word NOTEBOOK by using letters B,E,K,N,O,O,O and T. If you have to make arrangement of E,N,O and T first, after then you have to arrange B,K,O and O.
A, B and C are all running in a race. Probability that A wins is twice of B's and probability that B wins is twice Cs. Find the probability of winning of A.
