6.Four persons are chosen at random from a group of 3 men, 2 women and 4 children. The chance that exactly 2 of them are children, is : A) 1/9 B) 1/5 C) 1/12 D) 10/21 View Answer Report DiscussAnswer: Option DExplanation:
7.In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is : A) 21/46 B) 25/117 C) 1/50 D) 3/25 View Answer Report DiscussAnswer: Option AExplanation:
8.A box contains 4 red balls, 5 green balls and 6 white balls. A ball is drawn at random from the box. What is the probability that the ball drawn is either red or green ? A) 2/5 B) 3/5 C) 1/5 D) 7/15 View Answer Report DiscussAnswer: Option BExplanation:
9.In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ? A) 2/3 B) 3/4 C) 7/19 D) 8/21 E) 9/21 View Answer Report DiscussAnswer: Option DExplanation:
10.A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue ? A) 10/21 B) 11/21 C) 2/7 D) 5/7 View Answer Report DiscussAnswer: Option AExplanation:
