Probability Tes...

 then P(A) equals

A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random without replacement the probability of getting exactly one red ball is

Let A and B be two events such that P(A) $$= \frac{3}{8}$$, P(B) $$= \frac{5}{8}$$ and P(A $$\cup$$ B) $$= \frac{3}{4}$$. Then $$P(A|B). P(A'|B)$$ is equal to

A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random without replacement then the probability that two of the three balls were red, the first ball being red, is

If two events are independent, then

A flashlight has 8 batteries out of which 3 are dead. If two batteries are selected without replacement and tested, the probability that both are dead is 

A box has 100 pens of which 10 are defective. What is the probability that out of a sample of 5 pens drawn one by one with replacement at most one is defective?

The probability distribution of a discrete random variable X is given below.

The value of K is

The probability of guessing correctly at least 8 out 10 answers on a true-false type examination 

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