TISS-NET EXAM 2021|Mathematics & Logical Reasoning
1.       A box contains 2 pink, 3 yellow and 2 black balls. If 2 balls are drawn at random, find the probability that no ball is black.
1)Â Â Â Â 5/7 Â Â
2)Â Â Â Â 10/21 Â Â Â
3)Â Â Â Â 2/7 Â Â
4)Â Â Â Â 11/21
2.       In a bag, there are 8 pink, 7 yellow and 6 blue balls. One ball is picked up randomly. What is the probability that it is neither pink nor blue?
1)Â Â 2/3 Â
2)Â Â 3/4 Â Â Â
3)Â Â 7/19
4)Â Â 8/21
3.       A bag contains 10 red and 10 yellow balls. What is the probability of drawing 2 balls of the same color?
1)Â Â 9/19 Â Â Â Â Â
2)Â Â 9/38 Â Â Â Â Â
3)Â Â 10/19 Â Â Â Â
4)Â Â 5/19
4.       A bag contains 4 yellow, 5 orange and 6 grey balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is either yellow or orange?
1)Â Â 2/5 Â
2)Â Â 3/5 Â
3)Â Â 1/5 Â
4)Â Â 7/15
5.       In a college, there are 15 boys and 10 girls. Three students are selected at random. The probability that the selected students are 2 boys and 1 girl, is:
1)Â Â 21/46 Â Â Â Â
2)Â Â 25/117 Â Â Â
3)Â Â 1/50
4)Â Â 3/25
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