Mathematics
15 men were hired to plough a piece of land in 10 days. How many more men are required to do the same job in 3 days?
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Amir has 16 marbles in his pocket. He has 8 red ones, 4 green ones, and 4 blue ones. What is the minimum number of marbles he must take out of his pocket to ensure that he has one of each color?
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Two angles are supplementary. One angle is 12° less than three times the other. What is the measure of the larger angle?
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If difference between ages X and Y is 12 and ratio is 3:7, what is age of Y?
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In a caravan, there are 50 hens, 45 goats, 8 camels and some keepers. If total feet exceed heads by 224, find keepers.
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In a hotel mess there is enough food provisions for 1200 boarders for a month. After 15 days half of them leave due to vacations. How long will the food provisions last?
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The number of times in a day the hour hand and minute hand of a clock are at right angles is:
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What is the square root of -25?
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If the average of a number, its 75% and its 25% is 240, then the number is:
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