Probability Test

Result

Probability Test - 66

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Weekly Quiz Competition

Question 1
4 / -1

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Solution
Question 2
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For a biased die the probabilities for different faces to turn up are given below
The die is tossed and you are told that either face 1 or 2 has turned up. Then the probability that is face 1 is

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None of these

Solution
Question 3
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In a certain town, 40% of the people have brown hair, 25% have brown eyes and 15% have both brown hair and brown eyes. If a person selected at random from the town, has brown hair, the probability that he also has brown eyes is

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Solution
Question 4
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Solution
Question 5
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In an entrance test there are multiple choice questions. There are four possible answers to each question of which one is correct. The probability that a student knows the answer to a question is 90%. If he gets the correct answer to a question, then the probability that he was guessing is

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Solution
Question 6
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A coin is tossed three time in succession. If E is the event that there are lease two heads and F is the event in which first throw is a head, then P(E/F) =

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Solution
Question 7
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None of these

Solution
Question 8
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A signal which can be green or red with probability 4/5 and 1/5 respectively, is received by station by station A and then transmitted to station B. The probability of each station receiving the signal correctly is ¾. If the signal received at station B is green, then the probability that the original signal was green is

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Solution
Question 9
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All of the above

Solution
Question 10
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Two cards are drawn one by one from a pack of cards. The probability of getting first card an ace and second a colored one is (before drawing second card first card is not placed again in the pack)

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Solution