Q3 of 19 Page 1315

Find the mean and variance of the number of tails when three coins are tossed simultaneously.

Given : Three coins are tossed simultaneously


To find : mean (

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Find the mean and variance of the number of heads when two coins are tossed simultaneously.

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A die is tossed twice. ‘Getting an odd number on a toss’ is considered a success. Find the probability distribution of a number of successes. Also, find the mean and variance of the number of successes.

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A die is tossed twice. ‘Getting a number greater than 4’ is considered a success. Find the probability distribution of a number of successes. Also, find the mean and variance of the number of successes.