Four married couples have gathered in a room. Two persons are selected at random from amongst them. Find the probability that the selected persons are

There are m persons sitting in a row. Two of the mare selected at random. The probability that the two selected persons are together

There are m persons sitting in a row.Two of the mare selected at random.The probability that the two selected persons are together

Out of a group of 30 honest people, 20 always speak the truth. Two persons are selected at random from the group. Find the probability distribution of the number of selected persons who speak the truth. Also find the mean of the distribution

Out of a group of 30 honest people, 20 always speak the truth. Two persons are selected at random from the group. Find the probability distribution of the number of selected persons who speak the truth. Also, find the mean of the distribution.

There is a group of 50 people who are patriotic out of which 20 believe in non-violence. Two persons are selected at random out of them, write the probability distribution for the selected persons who are non-violent. Also find the mean of the distribution. Explain the importance of non-violence in patriotism.

There is a group of 50 people who are patriotic out of which 20 believe in non-violence.Two persons are selected at random out of them, write the probability distribution for the selected persons who are non-violent.Also find the mean of the distribution.

From a group of 3men and 2 women , two persons are selected at random . Find the probability that atleast one women is selected .

There are 40 scholars in a class, out of which 10 are sports- persons. Three scholars are selected at random out of them. Find the probability distribution for the selected persons who are sports-persons. Find the mean of the distribution.