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  • 1 . 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?

  • 2 . The average age of 30 kids is 9 years. If the teacher?s age is included, the average age becomes 10 years. What is the teacher?s age?

  • 3 . Find the sum up to 30 terms of the A.P. 2 + 9 + 16 + 23 + ....

  • 4 . Fathers age is 5 times his son's age. 4 years back the father was 9 times older than son.Find the fathers' present age.

  • 5 . An army general trying to draw his 16,160 men in rows so that there are as many men as true are rows, found that he had 31 men over. Find the number of men in the front row.

  • 6 . Two pipes A & B can fill a tank in 24 minutes and 36 minutes respectively. If both the pipes are opened simultaneously, the time after which A should be closed so that tank is filled in 18 min would be?

  • 7 . Two piped A & B can fill a tank in 36 hrs and 45 hrs respectively. If both pipes are opened simultaneously, how much time will be taken to fill the tank?

  • 8 . Today is 3rd November. The day of the week is Monday. This is a leap year. What will be the day of the week on this day after 3 years?

  • 9 . How many seconds will it take for a train 120 metres long moving at the rate of 15 m/sec to overtake another train 150 m long running from the opposite side at the rate of 90 km/hr?

  • 10 . A contractor agreeing to finish a work in 150 days, employed 75 men each working 8 hours daily. After 90 days, only 2/7 of the work was completed. Increasing the number of men by ________ each working now for 10 hours daily, the work can be completed in time.

  • 11 . Some work is done by two people in 24 minutes. One of them can do this work alone in 40 minutes. How much time does the second person take to do the same work ?

  • 12 . A horse is placed for grazing inside a square field 12m long and is tethered to one corner by a rope 8m long. Find the grazing area of the horse.

  • 13 . Eight friends Harsha, Fakis, Balaji, Eswar, Dhinesh, Chandra, Geetha, and Ahmed are sitting in a circle facing the center. Balaji is sitting between Geetha and Dhinesh. Harsha is third to the left of Balaji and second to the right of Ahmed. Chandra is sitting between Ahmed and Geetha and Balaji and Eshwar are not sitting opposite to each other. Who is third to the left of Dhinesh?

  • 14 . A finish the work in 10 days. B is 60% efficient than A. So how many days do B takes to finish the work?

  • 15 . Javagal, who decided to go to weekened trip should not exceed 8 hours driving in a day. The average speed of forward journey is 40 miles/hr.Due to traffic on sundays, the return journey's average speed is 30 m/h. How far he can select a picnic spot?

  • 16 . A pipe can fill a tank in 15hrs. Due to leak in the bottom, it is filled in 20 hrs. If the tank is full, how much time will the leak take to empty it?

  • 17 . A father is now three times as old as his son. Five years ago. he was four times as old as his son. Find their present age of father.

  • 18 . A mixture of 40 litres of milk contains 20% of water. How much water must be added to make the water 25% in the new mixture?

  • 19 . A computer routine was developed to generate two numbers (x,y) the first being a random number between 0 and 100 inclusive, and the second being less than or equal to the square root of the first. Each of the following pair satisfies the routine EXCEPT

  • 20 . What is the number whose 30% is 150