1.  Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5? 
a.  1/2 
b.  2/5 
c.  8/15 
d.  9/20 
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Answer: (d).9/20

2.  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 
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Answer: (a).10/21

3.  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.  1/3 
b.  3/4 
c.  7/19 
d.  8/21 
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Answer: (a).1/3

4.  What is the probability of getting a sum 9 from two throws of a dice? 
a.  1/6 
b.  1/8 
c.  1/9 
d.  1/12 
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Answer: (c).1/9

5.  Three unbiased coins are tossed. What is the probability of getting at most two heads? 
a.  3/4 
b.  1/4 
c.  3/8 
d.  7/8 
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Answer: (d).7/8
