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Previous Years Questions
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Marks 1
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Let the probability density function of a random variable x be given as f(x) = ae$$-$$2|x| The value of a is _________....
GATE EE 2022
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Assume that in a traffic junction, the cycle of the traffic signal lights is $$2$$ minutes of green (vehicle does not st...
GATE EE 2017 Set 2
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An urn contains $$5$$ red balls and $$5$$ black balls. In the first draw, one ball is picked at random and discarded wit...
GATE EE 2017 Set 2
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Two coins $$R$$ and $$S$$ are tossed. The $$4$$ joint events $$\,\,\,\,\,\,{H_R}{H_S},\,\,\,\,{T_R}{T_S},\,\,\,\,{H_R}{T...
GATE EE 2015 Set 2
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A fair coin is tossed $$n$$ times. The probability that the difference between the number of heads and tails is $$(n-3)$...
GATE EE 2014 Set 1
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A continuous random variable $$X$$ has a probability density function $$f\left( x \right) = {e^{ - x}},0 < x < \in...
GATE EE 2013
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Two independent random variables $$X$$ and $$Y$$ are uniformly distributed in the interval $$\left[ { - 1,1} \right].$$ ...
GATE EE 2012
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A box contains $$4$$ white balls and $$3$$ red balls. In succession, two balls are randomly selected and removed from th...
GATE EE 2010
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Assume for simplicity that $$N$$ people, all born in April (a month of $$30$$ days) are collected in a room, consider th...
GATE EE 2009
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$$X$$ is uniformly distributed random variable that take values between $$0$$ and $$1.$$ The value of $$E\left( {{X^3}} ...
GATE EE 2008
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If $$P$$ and $$Q$$ are two random events, then which of the following is true?
GATE EE 2005
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Marks 2
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A person decides to toss a fair coin repeatedly until he gets a head. He will make at most $$3$$ tosses. Let the random ...
GATE EE 2017 Set 2
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Candidates were asked to come to an interview with $$3$$ pens each. Black, blue, green and red were the permitted pen co...
GATE EE 2016 Set 1
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Let the probability density function of a random variable $$X,$$ be given as: $$${f_x}\left( x \right) = {3 \over 2}{e^...
GATE EE 2016 Set 2
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The probabilities that a student passes in Mathematics, Physics and Chemistry are $$m, p$$ and $$c$$ respectively. Of th...
GATE EE 2015 Set 1
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Given Set $$\,\,\,A = \left\{ {2,3,4,5} \right\}\,\,\,$$ and Set $$\,\,\,B = \left\{ {11,12,13,14,15} \right\},\,\,\,$$ ...
GATE EE 2015 Set 1
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A random variable $$X$$ has probability density function $$f(x)$$ as given below: $$$\,\,f\left( x \right) = \left\{ {\...
GATE EE 2015 Set 1
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Two players, $$A$$ and $$B,$$ alternately keep rolling a fair dice. The person to get a six first wins the game. Given t...
GATE EE 2015 Set 1
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Lifetime of an electric bulb is a random variable with density $$f\left( x \right) = k{x^2},$$ where $$x$$ is measured ...
GATE EE 2014 Set 3
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Let $$X$$ be a random variable with probability density function $$f\left( x \right) = \left\{ {\matrix{ {0.2} & ...
GATE EE 2014 Set 2
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Consider a die with the property that the probability of a face with $$'n'$$ dots showing up is proportional to $$'n'.$$...
GATE EE 2014 Set 2
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A fair coin is tossed till a head appears for the first time. The probability that the number of required tosses is odd...
GATE EE 2012
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A fair coin is tossed $$3$$ times in succession. If the first toss produces a head, then the probability of getting exac...
GATE EE 2005
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