Minor defects are found on 7 to 10 new cars. If 3 of the 10 cars are selectred at random , what is the probability that 2 have minor defects ?

In a pack of 10 watches, 3 are known ot be defective. If 2 watches are selected at random from the pack, what is the probability that at least one 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 40 bulbs contain 10 defective one. One bulb is selected at random from the lot what is the probability that. This bulb is defective? Suppose the bulb selected in previous case in not defective and is not replaced. Now one bulb is selected at random. from the test what is the probability that this bulb is not defective.

A lot of 20 bulbs contain 4 defective ones. One bulb is selected at random from the lot. What is the probability that this bulb is defective? Suppose the bulb selected in previous case is not defective and is not replaced. Now one bulb is selected at random from the rest. What is the probability that this bulb is not defective?

In a batch of 10 light bulbs , 2 are defective . If 3 of the bulbs are chosen at random, what is the probability that at least 1 of the chosen bulbs is defective ?

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

Suppose that the probability that an item produced by a particular machine is defective equals 0.2. If 10 items produced from this machine are selected at random, the probability that not more than one defective is found is

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 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.