1. What comes next in the series: 2, 6, 12, 20, 30, ___?

2. A person scored 80 marks out of 100 in a test. What is the percentage score?

3. The ratio of the ages of A and B is 5:7. If the sum of their ages is 72 years, what is the age of A?

4. A trader bought an article for Rs. 600 and sold it for Rs. 720. What is the profit percentage?

5. A car travels at a speed of 60 km/h for 2 hours. How far does the car travel?

6. If the principal is Rs. 2000, the rate of interest is 5% per annum, and the time period is 2 years, what is the simple interest?

7. The average of five numbers is 20. If one number is removed, the average becomes 18. What is the removed number?

8. A solution contains 30% alcohol. How much of this solution must be mixed with 20 liters of a solution containing 50% alcohol to get a mixture containing 40% alcohol?

9. Find the next term in the series: 3, 8, 15, 24, ___

10. The price of an item is increased by 10%. If the original price was Rs. 800, what is the new price of the item?

11. If 3 workers can complete a task in 12 days, how many days will 5 workers take to complete the same task?

12. A man sold a bicycle for Rs. 1200, incurring a loss of 20%. What was the cost price of the bicycle?

13. Two trains are running in opposite directions at speeds of 60 km/h and 80 km/h. They cross each other in 9 seconds. What is the length of each train?

14. What is the compound interest on a principal amount of Rs. 2000 for 2 years at an interest rate of 10% per annum, compounded annually?

15. The average age of a family of 4 members is 25 years. If the age of one member is 30 years, what is the average age of the remaining three members?

16. In a mixture of 30 liters, the ratio of milk to water is 2:3. How much water should be added so that the ratio of milk to water becomes 2:5?

17. What is the next number in the sequence: 5, 10, 20, 40, 80, ___?

18. A person’s salary is increased by 25%. If his original salary was Rs. 20,000, what is his new salary?

19. The ratio of the lengths of two sides of a rectangle is 3:4. If the perimeter of the rectangle is 56 cm, what is the length of the longer side?

20. An article is sold at Rs. 1200, which is 25% above its cost price. What is the cost price of the article?

21. A man walks 20 meters towards the North. He turns left and walks 20 meters. Then, he turns left again and walks 10 meters. Finally, he turns left and walks 20 meters again. Where is he now with respect to his starting point?

22. A sum of Rs. 2500 amounts to Rs. 3000 in 2 years at simple interest. What is the rate of interest?

23. What is the average weight of 6 persons if their average weight is 50 kg and one person weighing 60 kg is removed?

24. In a mixture of 30 liters, the ratio of milk to water is 2:3. How much water should be added so that the ratio becomes 2:5?

25. What is the next number in the series: 10, 20, 30, 40, ___?

26. A shopkeeper sells an article at a 20% profit. If the selling price of the article is Rs. 360, what is the cost price?

27. In a class, the ratio of boys to girls is 3:4. If there are 84 students in total, how many boys are there?

28. A man sold an article for Rs. 1200 with a 25% profit. What was the cost price?

29. Two cars start at the same time from two points 150 km apart and travel towards each other at speeds of 60 km/h and 90 km/h respectively. How much time will they take to meet?

30. What is the compound interest on Rs. 1000 for 3 years at 5% per annum, compounded annually?