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

Which of the following is divisible by the first four positive even integer multiples of 31?

A and B can finish a work in 12 days while A alone can do the same work in 20 days.

Mitali, a student of VIIIth standard, ranks eighth when put in class VIII A, ranks fifth when put in class VIII B, and ranks sixth when put in class VIII C.

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A group of people, cats, and birds has seventy legs, thirty heads, and twenty

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3 men and 10 boys finish a job in 9 days, 7 men and 7 boys finish it in 8 days. 9 men and 9 boys shall finish it in how many days?

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A man can row his boat with the stream at 16 km/h and against the stream in 4 km/h.

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Sam's dad is 4 times older than his son.

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A(4, w^2) is the (x, y) coordinate of point located on the parabola Y = X^2 + 9.

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Arun, Kamal and Vinay invested Rs.8000, Rs.4000 and Rs. 8000 respectively in a business.

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If eight persons sit in a row, then the probability that three particular persons are always together is?

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If a(a + 6) = 7 and b(b + 6) = 7, where a ≠ b, then a + b =

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How many positive even integers less than 100 contain digits 4 or 7?

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The average salary of 15 people in the shipping department at a certain firm is $20,000.

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If m=9^(x−1), then in terms of m, 3^(4x−2) must be which of the following?

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Dan's age after 18 years will be 5 times his age 6 years ago.

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A train passes a station platform in 36 seconds and a man standing on the platform in 24 seconds.

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Albert is 2 times Mary’s age and 4 times as old as Betty.

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How many words can be formed by using all letters of the word “PACKHORSE”

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If y is the smallest positive integer such that 3,675 multiplied by y is the square of an integer, then y must be

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The batting average for 40 innings of a cricket player is 50 runs.

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The length of the bridge, which a train 180 meters long and travelling at 45 km/hr can cross in 30 seconds, is?

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How many pages do you need if you have to write 150 lines of information into pages that each hold 30 lines?

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A certain psychologist charges $25 more for the first hour of therapy than for each additional hour.

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If shares of two persons in profits are Rs.300 and Rs.600 then ratio of their capitals is

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