Quantitative Aptitude Quiz – March, 2015 – Probability



Study the given
information carefully and answer the questions that follows:


An urn contains 3
red, 6 blue, 2 green and 4 yellow marbles
1. If two marbles are
picked at random, what is the probably that both are green?
(a) 2/15
(b) 1/15
(c)  2/7
(d) 1
(e) None of these

2. If three marbles
are picked at random, what is the probability that two are blue and one is
yellow?
(a) 2/15
(b) 6/91
(c)  12/91
(d) 1/5
(e) None of these

3. If four marbles
are picked any random, what is the probability that at least one is yellow?
(a) 91/123
(b) 69/91
(c)  125/143
(d) 1/4
(e) None of these

4. It two marbles are
picked at random, what is the probability that either both are red or both are

green?
(a) 3/5
(b) 4/105
(c)  2/7
(d) 5/91
(e) None of these

5. If four marbles
are picked at random, what is the probability that one is green, two are blue
and one is
red?
(a) 4/15
(b) 17/280
(c)  6/91
(d) 11/15
(e) None of these

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