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6831.(3/5)^3 × (3/5)^-6=(3/5)^2x-1 what is the value of X?
6832.The price of 357 mangoes is Rs.1517.25. What will be the approximate price of 49 dozen of such mangoes?
6833.Two trains are running in opposite directions with speeds of 62 km/h and 40 km/h respectively. If the length of one train is 260 m, and they cross each other in 18 seconds, then what is the length of the other train?
6834.A is 4 times as fast as B and therefore is able to finish the work in 45 days less than B. A and B, can complete the work in how many days?
6835.Ali earns rs 7500 in 2 weeks what will he earn in 2 days if he works 6 days a week?
6836.12 water pumps can make a water tank empty in 20 minutes. But 2 pumps are out of order. How long will the remaining pumps take to make the tank empty?
6837.The mean of 5 observations is 10. A new observation 10 is added, then mean of 6 observation is:
6838.The probability can take values:
6839.If we add a constant 3 to each observation of a data set, then find the mean: