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1. Average refers to the sum of numbers divided by n. Also called the mean average. Average Formula = Sum of observations/ Number of observations Some important properties of average are: When the difference between all the items is same (and the number of terms is odd), then...
1. a km / hr = (a * 5/18) m/s. 2. a m / s = (a * 18/5) km / hr. 3. Time taken by a train of length / meters to pass a pole or a standing man or a signal post is equal to the time taken by the train to cover 1 meters. 4. Time taken by a train of length / meters to pass a stationary obje...
1. Principal : The money borrowed or lent out for a certain period is called the principal or the SUM. 2. Interest : Extra money paid for using other’s money is called interest. Interest is the extra money paid by the borrower to the owner (lender) as a form of compensation for the us...