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(#M40109015) GATE QUESTION Probablity Keep an EYE

In answering a question on a multiple choice, a student either knows the answer or guesses. Let 3/4 be the probability that he knows the answer and 1/4 be the probability that he guesses. Assuming that a student who guesses at the answer will be incorrect with probability 1/4 What is the probability that the student knows the answer, given that he answered correctly?

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109013) GATE QUESTION Probablity Keep an EYE

A box X contains 2 white and 3 red balls and a bag Y contains 4 white and 5 red balls. One ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag Y.

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109012) GATE QUESTION Probablity Keep an EYE

Two cards from a pack of 52 cards are lost. One card is drawn from the remaining cards. If drawn card is heart, find the probability that the lost cards were both hearts

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109010) GATE QUESTION Probablity Keep an EYE

An insurance company insured 2000 scooter drivers, 4000 car drivers and 6000 truck drivers. The probability of an accidents are 0.01, 0.03 and 0.15 respectively one of the insured persons meets with an accident. What is the probability that he is a scooter driver?

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109009) GATE QUESTION Probablity Keep an EYE

A man is known to speak truth 3 out of 4 times. He throws a die and reports that it is six. Find the probability that it is actually a six.

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109006) GATE QUESTION Probablity Keep an EYE

Bag A contains 4 red, 3 white and 2 black balls. Bag B contains 3 red, 2 white and 3 black balls. One ball is transferred from bag A to bag B and then a ball is drawn from bag B. The ball so drawn is found to be red. Find the probability that the transferred ball is black.

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109005) GATE QUESTION Probablity Keep an EYE

In a hurdle race, a player has to cross 8 hurdles. The probability that he will clear a hurdle is 4/5 , what is the probability that he will knock down in fewer than 2 hurdles?

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109002) GATE QUESTION Probablity Keep an EYE

Ten eggs are drawn successively with replacement from a lot containing 10% defective eggs. Find the probability that there is at least one defective egg.

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40109000) GATE QUESTION Probablity Keep an EYE

A card from a pack of 52 cards is lost. From the remaining cards of the pack, two cards are drawn. What is the probability that they both are diamonds?

Asked In Gate Jaspalsingh Parmar (10 years ago)

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(#M40108999) GATE QUESTION Probablity Keep an EYE

Suppose that 10% of men and 5% of women have grey hair. A grey haired person is selected at random. What is the probability that the selected person is male assuming that there are 60% males and 40% females

Asked In Gate Jaspalsingh Parmar (10 years ago)

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