TNPSC Group 2 / 2A - Simplification percentage highest common factor HCF lowest common multiple LCM. Online Test (MCQ Quiz)

1. What is the value of 25% of 200?

A) 25 B) 50 C) 75 D) 100

2. If a number is increased by 10% and then decreased by 10%, what is the net percentage change?

A) 1% increase B) 1% decrease C) No change D) 10% increase

3. Find the highest common factor (HCF) of 12 and 18.

A) 2 B) 3 C) 6 D) 12

4. What is the lowest common multiple (LCM) of 4 and 6?

A) 2 B) 12 C) 24 D) 48

5. Simplify the expression: (15 + 5) * 2 - 10 / 5

A) 30 B) 38 C) 40 D) 50

6. A shopkeeper sells an item for Rs. 500, making a profit of 25%. What was the cost price of the item?

A) Rs. 400 B) Rs. 425 C) Rs. 450 D) Rs. 475

7. Find the HCF of 24, 36, and 48.

A) 6 B) 12 C) 18 D) 24

8. Calculate the LCM of 3, 5, and 7.

A) 15 B) 21 C) 35 D) 105

9. What is 150% of 80?

A) 100 B) 120 C) 150 D) 160

10. Simplify: 3/4 + 1/2

A) 1/4 B) 3/2 C) 5/4 D) 7/4

11. If the price of a shirt is reduced by 20% and the original price was Rs. 1000, what is the sale price?

A) Rs. 700 B) Rs. 800 C) Rs. 900 D) Rs. 980

12. Find the HCF of 105 and 135.

A) 5 B) 10 C) 15 D) 21

13. What is the LCM of 8 and 12?

A) 16 B) 24 C) 32 D) 48

14. Simplify the expression: 10 + (6 * 3) - 4 / 2

A) 12 B) 16 C) 26 D) 28

15. A number is multiplied by 5 and then 10 is subtracted. The result is 40. What is the number?

A) 6 B) 8 C) 10 D) 12

16. What is 3/5 as a percentage?

A) 30% B) 50% C) 60% D) 75%

17. Find the HCF of 56 and 72.

A) 4 B) 8 C) 12 D) 16

18. Calculate the LCM of 15 and 20.

A) 30 B) 45 C) 60 D) 75

19. If a student scores 75 marks out of 100, what is their percentage score?

A) 70% B) 75% C) 80% D) 85%

20. Simplify: 2/3 * 9/4

A) 3/2 B) 4/3 C) 2/3 D) 1/2

21. A number is decreased by 20%. If the new number is 160, what was the original number?

A) 180 B) 190 C) 200 D) 210

22. Find the HCF of 90 and 144.

A) 9 B) 12 C) 18 D) 36

23. What is the LCM of 6, 8, and 10?

A) 40 B) 60 C) 120 D) 240

24. Simplify: (5^2 - 3^2) / (5 - 3)

A) 2 B) 5 C) 8 D) 16

25. A person buys an article for Rs. 800 and sells it for Rs. 1000. What is the percentage profit?

A) 20% B) 25% C) 30% D) 50%

26. What is 0.75 as a fraction in its simplest form?

A) 3/5 B) 7/10 C) 3/4 D) 4/5

27. Find the HCF of 27, 63, and 81.

A) 3 B) 7 C) 9 D) 27

28. Calculate the LCM of 12, 18, and 24.

A) 36 B) 72 C) 108 D) 144

29. Simplify: 1/2 of (40 - 10) + 5

A) 15 B) 20 C) 25 D) 30

30. If 40% of a number is 120, what is the number?

A) 200 B) 250 C) 300 D) 350

31. Find the HCF of 130 and 180.

A) 5 B) 10 C) 20 D) 30

32. What is the LCM of 5, 10, and 15?

A) 15 B) 25 C) 30 D) 60

33. Simplify the expression: 7 + 3 * (10 - 2) / 4

A) 10 B) 13 C) 16 D) 21

34. A salesman's salary is increased by 15%. If his new salary is Rs. 23000, what was his original salary?

A) Rs. 19550 B) Rs. 20000 C) Rs. 21000 D) Rs. 22000

35. What is 12.5% as a fraction?

A) 1/4 B) 1/6 C) 1/8 D) 1/10

36. Find the HCF of 42 and 56.

A) 7 B) 14 C) 21 D) 28

37. Calculate the LCM of 9 and 15.

A) 45 B) 30 C) 15 D) 90

38. Simplify: 50% of 100 + 25% of 200

A) 75 B) 100 C) 125 D) 150

39. If a vendor buys apples for Rs. 30 per dozen and sells them for Rs. 40 per dozen, what is the profit percentage?

A) 25% B) 30% C) 33.33% D) 40%

40. Find the HCF of 75 and 100.

A) 15 B) 20 C) 25 D) 50

41. What is the LCM of 14 and 21?

A) 28 B) 42 C) 56 D) 84

42. Simplify: 100 / (10 * 2) + 5

A) 5 B) 10 C) 15 D) 20

43. A product's price is increased by 10% and then decreased by 10%. If the final price is Rs. 990, what was the original price?

A) Rs. 900 B) Rs. 990 C) Rs. 1000 D) Rs. 1010

44. Find the HCF of 18, 24, and 30.

A) 2 B) 3 C) 6 D) 12

45. Calculate the LCM of 20 and 30.

A) 40 B) 50 C) 60 D) 120

46. What is 7/8 as a percentage, rounded to two decimal places?

A) 85.75% B) 86.25% C) 87.50% D) 88.00%

47. Simplify: (60 - 12) / 4 + 8

A) 12 B) 17 C) 20 D) 24

48. A number is 25% more than another number. By what percentage is the second number less than the first?

A) 15% B) 20% C) 25% D) 30%

49. Find the HCF of 91 and 143.

A) 7 B) 11 C) 13 D) 14

50. What is the LCM of 16 and 24?

A) 32 B) 48 C) 64 D) 72

Simplification percentage highest common factor HCF lowest common multiple LCM. - Online Test

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