What is the chance of throwing a 6 at least once in 5 trials of an unbiased die?

Let X be the random variable of the number of points obtained in single throw of an unbiased die. Then, the value of barX is -

What is the probability of obtaining a multiple of 3 in the throw of a fair die?

(i) find the variance of the number obtained on a throw of an unbaised die (ii) what is the mathematical expectation of the sum of points on n dice ?

1.choose the correct answer from the given alternatives:1. if X be the random variable of the no. of points obtained in a single throw of unbiased die , then the value of barX will be

What is the expectation from a throw with a single die when a score of n is rewarded with a prize of n^(2) rupees

An unbiased coin is tossed. If the outcome of the random experiment of tossing the coin is tail, we throw an unbiased die. But if the coin shows a head, we draw ball froom a bag containning 2 white and 3 black balls. Write down the sample space associated with this random experiment

A coin is tossed.if the outcome of the random experiment of tossing the coin is tail , we throw an unbiased die. But if the coin shows a head. We draw a ball from a bag containing 2 white and 3 back balls. Write down the sample space associated with this random experiment.

A die is thrown 7 times. What is the chance that an odd number turns up (i) exactly 4 times (ii) at least 4 times