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)     5/7    

2)     10/21      

3)     2/7    

4)     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)   2/3  

2)   3/4      

3)   7/19

4)   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)   9/19          

2)   9/38          

3)   10/19        

4)   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)   2/5  

2)   3/5  

3)   1/5  

4)   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)   21/46        

2)   25/117      

3)   1/50

4)   3/25

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