For the following questions answer them individually
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Zinc and copper are melted together in the ratio 9 : 1. What is the weight of melted mixture, if 28.8 kg of zinc has been consumed in
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The average of ten numbers is 7. If each number is multiplied by 12, then the average of the new set of numbers is:
If one star equals four circles and three circles equal four diamonds, then what is the ratio of star to diamond?
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In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:
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The probability that a card drawn from a pack of 52 cards with be a diamond or a king, is
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1/13
4/13
2/13
1/52
1/25
In how many ways is it possible to choose a white square and a black square on a chess board so that the squares do not lie in the same row or column?
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The speed of a boat in still water is 15 km/h and the rate of stream is 5 km/h. The distance travelled downstream in 24 minutes is
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What decimal of an hour is a second?
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A number is multiplied by 11 and 11 is added to the product. If the resulting number is divisible by 13, the smallest original number is
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A man can row 60 km down stream in 6 hours. If the speed of the current is 3 km/h, then find in what time will he be able to cover 16 km upstream?