Question
The ratio of age of A and his son is 5:2. If the
difference of their ages 5 years ago is 21, then find the sum of the ages of A and his son together 11 years hence.Solution
Let the present age of A and his son be 5x and 2x respectively. => (5x – 5) – (2x – 5) = 21 => x = 7 Required sum = [(5 + 2) × 7] + 11 = 60 years
Which one of the following is not an assumption of Classical Linear Regression Model
Which of the following statements is NOT correct in the context of quantity theory of money?
In the case of cost-push inflation, other things being equal:
The A.M. and G.M. of a distribution are 12.5 and 10 respectively. Then the H.M. is
In which of the following models, price  is driven down to marginal cost?
 Which method is used by Hicks to eliminate the income effect when price of a product is changed
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Calculate the standard error of the estimate of Y on X regression equation for the following data- N =50 , ∑y2 = 300 , ∑xy = 30, ∑x
What is the variance of first n natural numbers
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