Q&Answers: Math/Chemistry/Physics Problems + Solutions

2 students gave an examination.

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If the weight of 12 meters long rod is 13.4 kg.

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If two numbers are in the ratio 2:3.

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If a trader sold two cars each at Rs. 325475 and gains 11% on the first and loses 11% on the second, then his profit or loss percent on the whole is?

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If a and b are both odd prime numbers and a < b, then how many different positive integer factors does 2ab have?

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A tank is filled to one quarter of its capacity with a mixture consisting of water and sodium chloride.

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A corporation triples its annual bonus to 50 of its employees.

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A tradesman by means of his false balance defrauds to the extent of 28%?

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There are 5person among whom 2are brother.

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A lemonade stand sold only small and large cups of lemonade on Tuesday. 1/5 of the cups sold were small and the rest were large.

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If a and b are the roots of the equation x2 - 8x + 8 = 0, then the value of a2 + b2 is:

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Amit and Ian paint a wall in alternating shifts.

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A train running at a speed of 60 kmph crosses a pole in 9 seconds.What is the length of the train?

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In a group of hats consisting of only blue hats, green hats, and purple hats, the ratio of blue hats to green hats to purple hats is 7:4:12.

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A sum of money at simple interest amounts to Rs. 2240 in 2 years and to Rs. 2600 in 5 years.

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If M and N are non-zero integers, and M/N > 1, then which of the following must be true?

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A man saves 20% of his monthly salary.

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What should be added to 4750 so that it may become a perfect square?

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Ayesha's father was 29 years of age when she was born while her mother was 23 years old when her brother three years younger to her was born.

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There are three secretaries who work for four departments.

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A train 110 m long is running with a speed of 27 km/hr.

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A reduction of 35% in the price of oil enables a house wife to obtain 5kgs more for Rs.800, what is the reduced price for kg?

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A person borrows Rs.5000 for 2 years at 4% p.a. simple interest.

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A number exceeds 20% of itself by 40.

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