In a box containing 100 bulbs, 10 are defective. The probability that out of a sample of 5 bulbs none is defective is :

In a box containing 100 bulbs, 10 are defective. What is the probability that out of a sample of 5 bulbs, exactly 2 are defective?

Ten eggs are drawn successively with replacement from a lot containing 10% defective eggs. Find the probability that there is at least one defective egg.

Ten eggs are drawn successively with replacement, from a lot containing 10% defectice eggs. Find the probability that there is at least one defective egg.

A box contains 100 bulbs out of which 10 are defective. A sample of 5 bulbs is drawn. The probability that none is defective , is

It is known that 10% of certain articles manufactured are defective. What is the probability that in a random sample of 12 such articles, 9 are defective?