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Unfortunately, Mr. M. Subramanian, who maintained this website lost his battle to cancer and passed away in July, 2019. The database has over 50,000 questions. If you are interested in purchasing the website/database, please reach out using the form here.
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Q1. A contract construction job specified a penalty for delay in completion of the work beyond a certain date is as follows: Rs.200 for the first day; Rs.250 for the second day; Rs.300 for the thrid day etc., The penalty for each succeeding day being Rs.50 more than that of the preceding day, how much penalty should the contractor pay if he delays the work by 10 days?
Q2. Roshan purchased a bike for Rs.54000 and sold it at a loss of 8%. With that money he purchased another bike and sold it at a profit of 10%. What is overall loss or gain?
Q3. Fill the Question mark -- 738 + (?) + 674 - 961 = 52.
Q4. The respective ratio between the present ages of Ram and Rakesh is 6:11. Four years ago the ratio of their ages was 1:2 respectively. What will be Rakesh's age after five years?
Q5. How many milligrams are there in a carat?
Q6. Mr.Nair purchased an air conditioner for Rs.12000 and sold it for Rs.15000.What was the profit percentage?
Q7. What is the mathematical term for 1 followed by hundred zeros?
Q8. What is the weighted mean of first 10 natural numbers whose weights are equal to the corresponding number? (CDS 2010)
Q9. A cylinder having base of circumference 60 cm is rolling without sliding at a rate of 5 rounds per second. How much distance will the cylinder roll in seconds? (CDS 2010)
Q10. If the highest common factor of two positive integers is 24 then their least common multiple CANNOT be......
Q11. The remainder on dividing given integers a and b by 7 are respectively 5 and 4. What is the remainder when ab is divided by 7? (CDS 2010)
Q12. The shadow of a pole 6 metres high is 15 metres long and at the same time the shaow of a tree is 25 metres long. What is the height of the tree? (CDS 2010)
Q13. The speed of a boat in still water is 11 km/h. It can go 12 km upstream and return downstream to engine point in 2 hours 45 minutes. What is the speed of stream? (CDS 2010)
Q14. The simple interest on a certain amount for 3 years at 8% per annum is half the compount interest on Rs.4000 for 2 years at 10% per annum. What is the sum placed on simple interest? (CDS 2010)
Q15. A man bought a number of oranges at 3 for a rupee and an equal number at 2 for a rupee. At what price per dozen, should he sell these to make a profit of 20%? (CDS 2010)
Q16. When one is added to each of two given numbers, their ratio becomes 3:4 and when 5 is subtracted from each, the ratio becomes 7:10. The numbers are ..... (CDS 2009)
Q17. The locus of centres of all circles of given radius in the same plane, passing through a fixed point is ....... (CDS 2009)
Q18. If in a circle of radius 21 cm, an arc subtends an angles of 56 degree at the centre, then the length of the arc is ......... (CDS 2009)
Q19. If the length of hypotenuse of a right angled triangle is 5 cm and its area is 6 sq cm, then the length of the remaining sides are ........ (CDS 2009)
Q20. A paper is in the form of a rectangle ABCD, where AB = 14 cm and BC = 7 Cm. If a semicircular portion with BC as diameter is cut off, then the area of the remaining paper is ........... (CDS 2009)
Q21. A right circular cone is divided into two portions by plane parallel to the base and passing through a point which is 1/3 of the height from the top. The ratio of the volume of the smaller cone to that of the remaining frustrum of the cone is ..........(CDS 2009)
Q22. If the radii of two spheres are in the ratio of 1:4, then their surface areas will be in the ratio .......... (CDS 2009)
Q23. A hemispherical bowl of an internal radius 12 cm contains liquid. This liquid is to be filled into cylindrical container of diameter 4 cm and height 3 cm. The number of containers that is necessary to empty the bowl is ........(CDS 2009)
Q24. Two trains, each 100 metre long, moving in opposite directions, cross each other in 8 seconds. If one is moving twice as fast as the other, then the speed of the faster train is .....(CDS 2009)
Q25. Person A can do a work in 6 days, while persons B and C can do the same work in 12 and 18 days respectively. If they start together to do the work on the same day and C stops working after 3 days, then the time required by A and B together to finish the rest of the work will be ..........(CDS 2009)
Q26. Due to the increase in the price of edible oil in the market by 25%, the consumption of this oil in a certain family is decreased by 12%. The expenditure of the family on edible oil is increased by ......(CDS 2009)
Q27. If 91 be the dividend and 13/15 the divisor, find the quotient?
Q28. If the income of A is 10% more than that of B and the income of B is 20% less than that of C, then the income of A, B and C are respectively in the ratio of ......(CDS 2009)
Q29. A sum of money invested at a certain rate of simple interest doubles itself in 12 years and 6 months. It will treble itself at the same rate of interest in ........... (CDS 2009)
Q30. If 8 students are seated on each bench, 3 benches are left over. If 5 students are seated on each bench, 12 students are left over. How many benches and students are there?
Q31. A shopkeeper sells an item at a loss of 12.5%. In order to gain 6% profit, he must increase the selling price by Rs.92.50. The cost price of the item is ........... (CDS 2009)
Q32. The population of a village is 7986. During the last three years, the population increased at the rate of 10% per year. The population before three years was ........ (CDS 2009)
Q33. A person divides Rs.10800 among his 3 sons in the ratio of 3:4:5. Second son kept Rs.1000 for himself , gave 600 to his wife; and divided the remaining money among his 2 daughters in the ratio of 11:9. Then one of his daughters received .........(CDS 2009)
Q34. If the monthly electricity bill in a hostel for lighting bulbs, each of 100 watt for 6 hours daily is Rs.3520. Then the amount of the bill when 30 bulbs each of 100 watt are lighted for 8 hours daily is .........(CDS 2009)
Q35. Which one of the following is divisible by 11? (CDS 2009)
Q36. The average age of 30 students in a class is 15 years. If 6 students of this class have the average age of 16 years, then the average age of the remaining 24 students would be ........(CDS 2009)
Q37. If the LCM of three numbers is 9570, then their HCF will be .......(CDS 2009)
Q38. There are some boys and girls in a room. The square of the number of the girls is less than the square of the number of boys by 28. If there were two more girls, the number of boys would have been the same as that of the girls. The total number of the boys and girls in the room are .......... (CDS 2008)
Q39. The largest number of five five digits which, when divided by 16, 24, 30 or 36 leaves the same remainder 10 in each case, is ........ (CDS 2008)
Q40. The HCF of two numbers, each having three digits, is 17 and their LCM is 714. The sum of the numbers will be ...... (CDS 2008)
Q41. The number of trees in each row of a garden is equal to the total number of rows in the garden. After 111 trees have been uprooted in a storm, there remain 10914 trees in the garden. The number of rows of trees in the garden is .......... (CDS 2008)
Q42. If the sum of the squares of three consecutive natural numbers is 110, then the smallest of these natural numbers is .........
Q43. The product of two numbers is 1280 and their HCF is 8. The LCM of the numbers will be ................(CDS 2008)
Q44. The first period of a class starts at 10:30 hrs and the fourth ends at 13:45 hrs. If periods are of equal duration and after each period a break of 5 minutes is given to the students, the exact duration of each period is ........ (CDS 2008)
Q45. The smallest positive integer n, for which 864n is a perfect cube, is ..........(CDS 2008)
Q46. A, B and C can complete a work in 10, 12 and 15 days respectively. They started the work together. But A left the work before 5 days of its completion. B also left the work 2 days after A left. In how many days was the work completed?
Q47. If one man can complete a piece of work in one day, then 5 men together can complete 5 times the work in ..........(CDS 2008)
Q48. A can complete a piece of work in 10 days, B in 15 days and C in 20 days. A and C worked together for two days and then A was replaced by B. In how many days altogether, was the work completed? (CDS 2008)
Q49. The sides of a triangle are in the ratio 3:4:6. The triangle is ...........(CDS 2008)
Q50. In a triangular field having sides 30 m, 72 m and 78 m, the length of the altitude to the side measuring 72 m is