Quantitative Aptitude
Test your numerical ability with questions covering arithmetic, percentage, interest, profit/loss, time/work problems, averages, probability, and permutations.
Questions
A room 18 metres and 42 cm long and 15 metres and 35 cm wide, is to be paved with minimum number of square tiles. The number of tiles needed is
- 15
- 30
- 21
- 18
- 16
A positive number is divided by 4, instead of being multiplied by 4. By what percent is the result of the required value?
- 6.00
- 6.25
- 6.75
- 5.25
- 6.50
The mean of 15 numbers is 60. If the mean of first 8 results is 59 and that of last 8 results is 63, find the 8th result.
- 86
- 104
- 50
- 76
- 62
The difference between simple interest and compound interest on a sum of money at 6% per annum for 2 years is Rs. 216. Find the sum.
- Rs. 50,000
- Rs. 65,000
- Rs. 60,000
- Rs. 62,000
- Rs. 70,000
If the cost price of 15 articles be equal to selling price of 20 articles, what is the loss or profit percentage?
- 25% loss
- 20 % loss
- 20% gain
- 25% gain
- No loss or gain
Vikram, Vivek and Vikrant can do a work 3, 4and 5 days, respectively. On completing that work together, they get an amount of Rs. 4700. What is the individual share of each one of them in that amount?
- 1200, 2500 and 1000 respectively
- 1800, 2000 and 2500 respectively
- 2000, 1500 and 1200 respectively
- 1300, 1400 and 2000 respectively
- 800,1600 and 2300 respectively
The minute hand of a clock overtakes the hour hand at intervals of 63 minutes of the correct time. How much does the clock gain or lose?
- 27/11
- 540/77
- 1440/143
- 65/11
- 470/77
A taxi leaves from Dehradun at 6 a.m. and reaches Delhi at 12 noon. If another taxi leaves Delhi at 10 a.m. and reaches Dehradun at 7 p.m., then at what time do the taxis meet?
- 11:20 a.m.
- 10:50 a.m.
- 12 noon
- 10 a.m.
- 11 a.m.
A leak in the bottom of the container can empty it in 6 hours. A pipe fills in the container at the rate of 4 litres/minute. When the container is full, the inlet in opened but due to the leak, the container is emptied in 8 hours. What is the capacity of the tank?
- 8590 litres
- 5000 litres
- 3750 litres
- 2440 litres
- 5760 litres
The average of the marks secured by 30 students of Grade A is 50, that of 40 students of Grade B is 30 and that of 45 students of Grade C is 55. What is the combined average of the students of the three grades?
- 49.28
- 45
- 43.26
- 1725
- 38.33
Suman takes thrice as much time as Rahul and four times as much as Varun to finish a task. They together complete the task in one day. Find the time taken by each of them to complete the task.
- 6 days
- 14 days
- 5 days
- 10 days
- 8 days
In a cricket match,1/5 of all the seats is located in the front section. 5/6 of the seats in the front section of the stadium were sold. If 3/4 of all the seats were sold, then find the fraction of the unsold seats that were in the front section.
- 1/30
- 2/9
- 4/5
- 2/15
- 4/15
The number of ways in which 21 people can sit around a conference table so that none of them have the same neighbours in any two arrangements is
- 20!*2
- 21!/2
- 21!
- 20!/2
- 20!
Vivek is 3 times as old as Tarun. Sourabh was twice as old as Vivek 4 years ago. In 4 years, Vivek will be of 31 years. What is the present age of Tarun and Sourabh, respectively?
- 9 and 50
- 9 and 54
- 12 and 60
- 9 and 46
- 50 and 9
Six balls are drawn at random from a bag containing six white, five green and four black balls. The probability that exactly 3 of them are white is
- 16/143
- 48/143
- 12/143
- 32/143
- 4/1001