1
GATE IN 2012
MCQ (Single Correct Answer)
+2
-0.6
A fair coin is tossed till a head appears for the first time. The probability that the number of required tosses is odd, is
A
$$1/3$$
B
$$1/2$$
C
$$2/3$$
D
$$3/4$$
2
GATE IN 2011
MCQ (Single Correct Answer)
+2
-0.6
The box $$1$$ contains chips numbered $$3, 6, 9,$$ $$12$$ and $$15$$. The box $$2$$ contains chips numbered $$6, 11, 16, 21$$ and $$26$$. Two chips, one from each box are drawn at random. The numbers written on these chips are multiplied. The probability for the product to be an even number is ______________.
A
$${6 \over {25}}$$
B
$${2 \over {5}}$$
C
$${3 \over {5}}$$
D
$${19 \over {25}}$$
3
GATE IN 2008
MCQ (Single Correct Answer)
+2
-0.6
Consider a Gaussian distributed random variable with zero mean and standard deviation $$\sigma .\,\,\,$$ The value of its cumulative distribution function at the origin will be
A
$$0$$
B
$$0.5$$
C
$$1$$
D
$$10\,\sigma $$
4
GATE IN 2008
MCQ (Single Correct Answer)
+2
-0.6
$${P_x}\left( X \right) = M{e^{\left( { - 2\left| x \right|} \right)}} + N{e^{\left( { - 3\left| x \right|} \right)}}\,\,$$ is the probability density function for the real random variable $$X,$$ over the entire $$x$$-axis, $$M$$ and $$N$$ are both positive real numbers. The equation relating $$M$$ and $$N$$ is
A
$$M + {2 \over 3}N = 1$$
B
$$2M + {1 \over 3}N = 1$$
C
$$M+N=1$$
D
$$M+N=3$$
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
CBSE
Class 12