Probability MCQ Set 3

PROBABILITY MCQ SET 3

1. Four coins are tossed simultaneously , what is the probability that at least three coins get heads or tails?

(a) 5/8

(b) 5/11

(c) 7/64

(d) 1/8

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Answer: A

2. A coin is tossed 5 times , what is a probability of getting exactly 2 heads?

(a) 8/20

(b) 6/45

(c) 5/16

(d) 4/51

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Answer: C

3. A coin is tossed 8 times , what is a probability of getting exactly 6 tails ?

(a) 7/20

(b) 7/12

(c) 77/13

(d) 7/64

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Answer: D

4. A coin is tossed 9 times . Find the probability of atmost 2 tails .

(a) 23/250

(b) 25/256

(c) 23/256

(d) 27/250

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Answer: C

5. A coin is tossed 7 times . Find the probability of atleast 2 tails .

(a) 14/15

(b) 16/54

(c) 18/11

(d) 15/16

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Answer: D

6. A dice is thrown , find the probability of :

(i) A prime number

(a) 1/3

(b) 1/2

(c) 2/3

(d) 1/4

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Answer: B

7. A dice is thrown , find the probability of :

(ii) A multiple of 2 or 3

(a) 3/4

(b) 2/3

(c) 4/5

(d) 5/8

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 Answer: B

8. A dice is thrown , find the probability of :
(iii) A number greater than 4

(a) 1/5

(b) 2/3

(c) 5/8

(d) 1/3

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Answer: D

9. A dice is thrown twice , what is the probability of getting a sum of 7 when thrown twice?

(a) 5/18

(b) 1/18

(c) 1/9

(d) 1/6

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Answer: D

10. Two dice are thrown simultaneously . Find the probability of
(i) Sum as 8

(a) 5/36

(b) 5/18

(c) 1/6

(d) 11/36

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Answer: A