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

In an examination, 5% of the applicants were found ineligible and 85% of the eligible candidates belonged to the general category.

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P and Q are both positive integers.

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When a is divided by b, the quotient is c with remainder 6.

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How many prime numbers exist between 1 and 20?

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All of the positive integers are written in a triangular pattern, beginning with the following

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The product of all the prime numbers less than 20 is closest to which of the following powers of 10 ?

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There are 6 identical pens and 9 identical books.

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For all even integers n, h(n) is defined to be the sum of the even integers between 2 and n, inclusive.

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Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 15hr.

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The population of a town increased from 1,34,800 to 2,42,500 in a decade.

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In a company of 160 employees, 90 are females.

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A, B and C started a business with capitals of Rs.

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Two trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously.

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A father said to his son, "I was as old as you are at the present at the time of your birth".

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Simplify 3/4 of 6 0 – 8/5 of 60 + ?

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A person spends 1/5th of his income on the education of his children, and 20% of the remaining on food.

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If two positive numbers are in the ratio 1/12 : 1/9, then by what percent is the second number more than the first?

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S = { 1,2,3,5,6,9} T = { 4,5,6,7,1,3}

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One pipe can fill a pool four times faster than a second pipe.

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How many odd numbers are possible between 1 to 1000000000?

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The average height of 35 boys in a class was calculated as 184cm.

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A cylinder is 6 cms in diameter and 6 cms in height.

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If 75 percent of 600 is 50 percent of x, then x=?

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If $120 invested at a certain rate of simple interest amounts to $160 at the end of 3 years,How much will $150 amount to at the same rate of interest in 6 years?

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