Question
Two trains A and B, were proceeding in the same
direction on parallel tracks at 20 km/hr and 92 km/hr respectively. A man noticed that it took exactly 15 seconds for the faster train to pass by him. What is the length of the faster train?Solution
Relative speed = (92 – 20) km/hr = 72 km/hr => 72 × (5/18) = 20 m/sec Length of the faster train = 20 × 15 = 300 m
While calculating Pearson's correlation coefficient, the following values are obtained for 25 pairs of observations. It was later discovered that two pa...
When the price of a commodity decreases, and its demand curve forms a rectangular hyperbola, what happens to the total expenditure on that commodity?
For a frequency distribution if Coefficient of variation is 5, standard deviation is 2 and Karl Pearson’s coefficient of skewness is 0.5, the value of...
The government provides public goods because
In which of the following market structure Quantity is maximum?
The Fisher Effect assumes that the    Â
The costs of inflation are?
Which of the following Herfindahl-Hirschman Index is most consistent with monopoly?
The fiscal deficit is the difference between the government’s total expenditure and its total receipts excluding ______
