• 1 . If a man travels at a speed of 20 km/hr, then reaches his destination late by 15 minutes and if he travels at a speed of 50 km/hr. Then he reaches 15 minutes earlier. How far is his destination?

  • 2 . A number when divided by 19, gives the quotient 19 and remainder 9. Find the number.

  • 3 . The population of the lost continent Atlantis is 18,000. Atlantis has three cities A, B and C. Every year the entire population of each city moves to the other two cities, half going to one of them and the remaining half going to the other. The current population of A, B and C is 2000, 6000 and 10000 respectively. Then the population of A four years from now will be

  • 4 . Four prime numbers are given in ascending order of their magnitudes, the product of the first three is 385 and that of the last three is 1001. Find the largest of the given prime numbers.

  • 5 . A man plants his orchid with 5625 trees and arranges them so that there are as many rows as there are trees in a row. How many rows are there?

  • 6 . Two pipes P & Q can separately fill a cistern in 12 minutes and 18 minutes respectively. In how many minutes can both the pipes fill the cistern, if opened together?

  • 7 . A student divided a number by 2/3 when he required to multiply by 3/2. Calculate the percentage of error in his result.

  • 8 . What percent of 60 is 12?

  • 9 . The average of 8 numbers is 21. Find the average of new set of numbers when 8 multiplies every number.

  • 10 . In a two-dimensional array, X (9, 7), with each element occupying 4 bytes of memory, with the address of the first element X (1, 1) is 3000; find the address of X (8, 5).

  • 11 . In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

  • 12 . A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?

  • 13 . A can copy 50 papers in 10 hours while both A & B can copy 70 papers in 10 hours. Then for how many hours required for B to copy 26 papers?

  • 14 . A train running between two stations A and B arrives at its destination 15 minutes late, when its speed is 45 km/hr. and 36 minutes late when its speed is 36 km/hr. find the distance between the stations A and B.

  • 15 . t was calculated that 75 men could complete a piece of work in 20 days. When work was scheduled to commence, it was found necessary to send 25 men to another project. How much longer will it take to complete the work?

  • 16 . A train travels 18 km/hr. How many metres will it travel in 12 minutes.

  • 17 . If the operation,^ is defined by the equation x ^ y = 2x + y,what is the value of a in 2 ^ a = a ^ 3

  • 18 . A merchant made a profit of g% by selling an article at a certain price. Had he sold it at two thirds of that price, he would have incurred a loss of 20%. Find ?g?.

  • 19 . If 20 men take 15 days to to complete a job, in how many days can 25 men finish that work?

  • 20 . 1. If a pipe A fills a tank in 10 hours and a pipe B fills it in 15 hours, then the tank will be filled by A and B together in how much time?