Question
Who among the following person lives on the bottommost
floor? Study the following information carefully and answer the question given below: Eight persons viz. P, Q, R, S, T, U, V, and W live on an eight storey building, but not necessarily in the same order. The bottommost floor is numbered as one and the topmost floor is numbered as eight. W lives three floors below U, who lives below the eighth floor. There are an even number of floors above U. Only one person lives between R and W. Only two persons live between R and P. Q lives just above S. Q doesn’t live on a prime numbered floor. T lives on one of the floors above V. T doesn’t live adjacent to P.Solution
Here we have, W lives three floors below U, who lives below the eighth floor. There are an even number of floors above U. Only one person lives between R and W. Here we get three possibilities. 
Case-I and case-III get eliminated because no space left for T. 
For the random variable X with probability density function f(x) = (x−3)2 /5; x = 3, 4, 5, the variance of X is:
If P(A) = 0.4; P(B ∣ A) = 0.05; P(C ∣ A) = 0.04; P(B ∣ A ∩ C) = 0.09; P(C ∣ A ∩ B) = 0.0 7, then the probability of occurrence of all event...
Which option is incorrect?
In one way ANOVA, σ2 is estimated by:
For the variables X and Y, we collect 4 observations with ∑ X = 10,∑ Y = 14,∑ X2 = 30,∑ Y2 = 54,∑ XY = 31 The regressio...
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is:
The mode of the given data set is 12. The sum of the frequency on both sides of mode are 16. The skewness:
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