1
GATE ME 2010
MCQ (Single Correct Answer)
+1
-0.3
A box contains $$2$$ washers, $$3$$ nuts and $$4$$ bolts. Items are drawn from the box at random one at a time without replacement. The probability of drawing $$2$$ washers first followed by $$3$$ nuts and subsequently the $$4$$ bolts is
A
$$2/315$$
B
$$1/630$$
C
$$1/1260$$
D
$$1/2520$$
2
GATE ME 2009
MCQ (Single Correct Answer)
+1
-0.3
If three coins are tossed simultaneously, the probability of getting at least one head is
A
$$1/8$$
B
$$3/8$$
C
$$1/2$$
D
$$7/8$$
3
GATE ME 2009
MCQ (Single Correct Answer)
+1
-0.3
The standard deviation of a uniformly distributed random variable $$b/w$$ $$0$$ and $$1$$ is
A
$${1 \over {\sqrt {12} }}$$
B
$${1 \over {\sqrt {3} }}$$
C
$${5 \over {\sqrt {12} }}$$
D
$${7 \over {\sqrt {12} }}$$
4
GATE ME 2008
MCQ (Single Correct Answer)
+1
-0.3
A coin is tossed $$4$$ times. What is the probability of getting heads exactly $$3$$ times?
A
$$1/4$$
B
$$3/8$$
C
$$1/2$$
D
$$3/4$$
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