AIEEE 2014 Examination
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All India Engineering / Architecture Entrance Examination (AIEEE)
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AIEEE 2010 Mathematics
Q. 3. An urn contains nine balls of which three are red, four are blue and two are green. Three balls are drawn at random without replacement from the urn. The probability that the three balls have different colours is.
Sol :
Required probability=
Answer: (1)
Q. 4. For two data sets, each of size 5, the variances are given to be 4 and 5 and the corresponding means are given to be 2 and 4, respectively. The variance of the combined data set is
Sol :
Answer: (1)
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