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A container contains 40 liters of milk. From this container 4 liters of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container?

A container contains 40 liters of milk. From this container 4 liters of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container? Correct Answer 29.16 liters

Shortcut: .'. x(1 - yx)n = 40(1 - 440)3 = 40(40 - 440)3 = 40(3640)3 = 40(910)3 = 40×9×9×910×10×10 = 29.16 liters 

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