List of top Arithmetic and Mental Ability Questions

A man drove east for 5 kms, then drove north 3 kms, then turned to his left and drove for 2 kms and again turned to his left. Which direction was he going now?
Select the letter cluster from among the given options which can replace the question (?) mark: BMRG, DLTF, FKVE, HJXD, ?
Select the option that is related to the third word in the same way as the second word is related to the first word.
Pilot : Cockpit :: Surgeon : ?
Which one of the given responses would be a meaningful order of the following?
  • Seed
  • Flower
  • Fruit
  • Tree
Ratio of milk and water in a mixture is 4:3 respectively. If 6 Litres of water is added to this mixture, the respective ratio of milk and water becomes 8:7. What is the quantity of milk in the original mixture?
A can do a piece of work in x days and B can do the work in 3x days. To finish the work together, they take 12 days. What is the value of x?
There are two tanks A and B to fill up a water tank. The tank can be filled in 40 min together by A and B, if the tank can be filled in 60 min when tap A alone is on. How much time will tap B alone take to fill up the tank?
Two cities A and B are 360 km apart. A car goes from A to B with a speed of 40 km/h and returns to A with a speed of 60 km/h. What is the average speed of the car?
Arun starts a business with Rs. 8000 and Avinash joined him after 6 months with an investment of Rs. 40000. What will be the ratio of the profits of Arun and Avinash at the end of the year?
If the price of petrol increased by 20%, by what percentage should the consumption be decreased by the consumer so that the expenditure on petrol remains unchanged?
In a class there are 48 students. The ratio of number of boys to number of girls is 5:3. The number of girls to be added to the class so that the number of boys to girls is 6:5 is?
By selling a table at Rs 475, a person loses 5%. To get a gain of 5%, he should sell the table for:
A gardener has 36562 plants. He wants to arrange them in the form of a square with equal number of columns and rows. After arranging, he found some of the plants unused. The remaining plants are?
A certain sum becomes 8 fold in 15 years at simple interest. What will be the rate of interest?
The average score of a batsman after his 30th match was 25.5. After the 40th match, his average score increased by 3.2. What is his average score in the last ten matches?
Find the missing number in the series: 6, 3, 3, 6, 24, ?
John has two pieces of rope, one is 18 meters long and the other is 15 meters long. He wants to cut them into smaller pieces of equal length without any rope left over. How many pieces will he have in total?
Find the wrong number in the series. 3, 31, 131, 351, 739, 1343, 2211, 3291, 4931
What is the angle between hour and minute hand of a clock at 6.30?
Two small boats are sailing in the sea on the two sides of a big ship. The angle of elevation of the top of the big ship is observed from the boat are 30 degree and 45 degree. If the height of the big ship is 200 meters as measured from the surface of the sea, calculate the distance between two small boats?
An Air Traffic Controller is watching from the control tower a plane which was moving from the tower. The plane makes the angle of depression of 60 degree with ATC's eye when at the distance of 100 meters from the tower. After 20 seconds the angle of depression becomes 45 degree. Calculate the speed of the moving plane.
The height of the tree is 6\(\sqrt{3}\) meters. The length of its shadow is 6 meters. What is the angle of elevation of the sun?
The average mark in the chemistry practical exam of a class of 40 students is 100. But one student's mark was entered wrongly as 50 instead of 100. What would be the correct average?
A furniture was sold for 1,10,000 with a profit of 10%. If it were sold for 80,000 rupees, then what would have been the percentage of profit/loss?
Simplify: 9 X 99 X 999