Four persons are selected at random out of 3 men, 2 women and 4 children. The probability that there are exactly 2 children in the selection is a. 11/21 b. 9/21 c. 10/21 d. none of these

Four people are chosen at random from a group consisting of 3 men , 2 women , and 3 children. Find the probability that out of four chosen people , exactly 2 are children ?

A father has 3 children with at least one boy. The probability that he has 2 boys and 1 girl is 1//4 b. 1//3 c. 2//3 d. none of these

A father has 3 children with at least one boy. The probability that he has 2 boys and 1 girl is 1//4 b. 1//3 c. 2//3 d. none of these

There are 3 men, 2 women and 4 children. If 4 persons are selected then which of the following is/are true?

Four persons are to be chosen at random from a group of 3 men, 2 women and 4 children. Find the probability of selecting: (i)1man  1woman and 2 children (ii)Exactly 2 children             (iii) 2 women

There are only two women among 20 persons taking part in a pleasure trip. The 20 persons are divided into two groups, each group consisting of 10 person. Then the probability that the two women will be in the same group is a. 9//19 b. 9//38 c. 9//35 d. none

From a group of 10 persons consisting of 5 lawyers, 3 doctors and 2 engineers, four persons are selected at random. The probability that the selection contains at least one of each category is (A) 1//2 (B) 1//3 (C) 2//3 (D) none of these

A month is selected at random in a year. The probability that it is March or October, is 1/(12) (b) 1/6 (c) 3/4 (d) None of these

A bag has 10 balls. Six ball are drawn in an attempt and replaced. Then another draw of 5 balls is made from the bag. The probability that exactly two balls are common to both the draw is a. 5//21 b. 2//21 c. 7//21 d. 3//21

A committee of two persons is selected from two men and two women. What is the probability that the committee will have (a) no man? (b) one man? (c) two men?