What is probability experiments :

Consider the random experiment of throwing two dice together What is the probability of "getting a sum 12"?

An experiment succeeds twice as often as it fails, what is the probability that in the next five trials there will three successes.

In a random experiment, a fair die is rolled until two fours are obtained in succession.The probability that the experiment will end in the fifth throw of the die is equal to

In a random experiment, a fair die is rolled until two fours are obtained in succession.The probability that the experiment will end in the fifth throw of the die is equal to

In a random experiment, a fair die is rolled until two fours are obtained in succession.The probability that the experiment will end in the fifth throw of the die is equal to

In a random experiment,a fair die is rolled until two fours are obtained in succession.The probability that the experiment will end in the fifth throw of the die is equal to

What is sum of the probablities of all the possible events of a random experiment ?

If E is any event of a random experiment then the probability of the event E belongs to

An unbiased coin is tossed 20 times. In this experiment , 11 heads and 9 tails were received. Calculate the probability of receiving head and the probability of receiving tail on the basis of the experiment .