There are 10 defective bulbs in a group of 100 bulbs. If a sample of 8 bulbs are selected at random then find the probability that:
(i) in this sample 3 bulbs are defective and 5 are non-defective.
(ii) in this sample at least one bulb is defective.

There are 20 defective bulbs in a box of 100 bulbs. If 10 balls are chosen at random what is the probability that there are just 3 defective bulbs

There are 20 defective bulbs in a box of 100 bulbs. If 10 balls are chosen at random what is the probability that there are at least 3 defective balls.

A lot of 100 bulbs from a manufacturing process is known to contain 10 defective and 90 non-defective bulbs . If 8 bulbs are selected at random, what is the probability that . (a) there will be three defective and 5 non defective bulbs. (b) there will be atleast one defecitve bulb.

Out of 100 bulbs in a box 10 bulbs are defective. Five bulbs are selected at random from it. Then find the probability of an event that selected bulb is of without defect.

10 % bulbs are defective produced by some factory. 5 bulbs are selected at random then ……… is the probability that bulb is without defect.

Out of 250 bulbs in a box, 35 bulbs are defective. One bulb is taken out at random from the box. Find the probability that the drawn bulb is not defective.