A factory buys 10 machines. 1 MachineA, 4 MachineB and rest MachineC. Prices of the machines are Rs 90000, Rs 40000 and Rs 40000 respectively. Calculate the average cost of these machines?
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If the perimeter of a semi-circle is 36 cm, then find its radius (in cm).
Which of the following has become the first country in the world to pay equal salary to men and women?
A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
10, 22, 46, ?
Glass is also called ________.
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Electric tram was invented by?