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## Probability

 Question 1
A number p is chosen at random from the numbers [-3, 3]. What is the probability that value of p < 2
 A 3/7 B 5/7 C 4/7 D 1/7
Probability
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Question 1 Explanation:
Favorable/Total = -ve numbers/total number
 Question 2
A and B appeared for an exam. Let A is selected when even x happens and B is selected if the event y happens. The probability of event x is 1/7 and that of y is 2/9. Find the probability that both A and B got selected.
 A 7/15 B 3/14 C 2/63 D 6/63
Probability
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 Question 3
A box contains 6 black, 5 brown and 2 yellow balls. If 2 balls are selected at random, what is the probability that both are black?
 A 4/23 B 5/26 C 7/26 D 8/15
Probability
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 Question 4
4 dices are thrown simultaneously. What is the probability that all the dices show the same number.
 A 1/216 B 1/36 C 4/216 D 4/36
Probability
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 Question 5
An urn contains 12 red and 18 white marbles. Two marbles are drawn without replacement one after another. What is the probability that first is red and second is white?
 A 16/145 B 9/32 C 36/145 D 5/32
Probability
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 Question 6
What is the probability that a number selected from numbers [1,30] is prime number?
 A 1/3 B 2/7 C 5/9 D 5/30
Probability
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 Question 7
A bag contains 21 balls numbered 1 to 21. two balls are drawn one after another without replacement. Find the probability that both balls are even numbered.
 A 3/14 B 2/3 C 6/9 D 1/8
Probability
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 Question 8
A 5 digit number is formed by using digits 1, 2, 3, 4 and 5 with no two digits same. What is the probability that the formed number is divisible by 4?
 A 1/5 B 4/5 C 3/5 D 1/4
Probability
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 Question 9
A box having 5 black and 3 brown flags. Another box having 4 black and 6 brown flags. If one flag is drawn from each box. Find the probability that both flags are of different color.
 A 21/40 B 10/19 C 3/8 D 3/10
Probability
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 Question 10
Ram speaks truth in 3/4 of cases and Shyam in 4/5 of cases. In what percent of cases while narrating the same event are they likely to contradict each other?
 A 35% B 25% C 20% D 40%
Probability
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There are 16 questions to complete.
12

## GATE CS Corner

See Placement Course for placement preparation, GATE Corner for GATE CS Preparation and Quiz Corner for all Quizzes on GeeksQuiz.