A box contains 600 screws,1/10th are rusted. One screw is taken out at random from this box. Find the probability 1.that it is a good screw.2. It is a rusted screw
Box has a total of 600 screws
Rusted screws = (1/10)*600 = 60
Good screw = 600 - 540 = 60
Probability of picking good screw is 540/600 = 0.9
Probability of rusted good screw is 60/600 = 0.1
Rusted screws = (1/10)*600 = 60
Good screw = 600 - 540 = 60
Probability of picking good screw is 540/600 = 0.9
Probability of rusted good screw is 60/600 = 0.1
