A fan will fall or not fall there is two outcome of the event then does it mean fan falling probability is .5 ? If so then 50% fan should fall, whats wrong with the argument?
Probability of the event = (Probability of fan falling + Probability of fan not falling) = 1 = (very very small (increases slowly with time and wear) + almost 1(decreases with time)) = 1. The 2 outcomes of the event are not equally likely to happen. If this was the true probability no one would instal a fan in their houses.
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.
There are 5 switches in a board. In these 5 switches 1 is attached with the fan. A person has to start the fan in 2 attempts only. What will be the probability of success?
A bag contains 5 white, 4 red and 3 black balls. A ball is drawn at random from the bag, what is the probability that it is not black?
