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GRE Math: Common Errors

Subjects : gre, math
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Reduce: 4.8 : 0.8 : 1.6






2. What is a parabola?






3. (6sqrt3) x (2sqrt5) =






4. When does a function automatically have a restricted domain (2)?






5. What is an isoceles triangle?






6. P and r are factors of 100. What is greater - pr or 100?






7. (a^-1)/a^5






8. 5/8 in percent?






9. x^6 / x^3






10. 6w^2 - w - 15 = 0






11. What does the graph x^2 + y^2 = 64 look like?






12. What is the maximum value for the function g(x) = (-2x^2) -1?






13. Evaluate and write as a mixed number: 2/7 - 3/21 + 2 & 4/14






14. What is the intersection of A and B?






15. 60 < all primes <70






16. 20<all primes<30






17. In similar hexagons - the ratio of the areas is 16:25. What is the ratio of their corresponding sides?






18. Write 10 -843 X 10^7 in scientific notation






19. What is the graph of f(x) shifted downward c units or spaces?






20. Formula for the area of a circle?






21. What is the name of set with a number of elements which cannot be counted?






22. What is the common monomial factor in the expression 4(c^3)d - (c^2)(d^2) + 2cd?






23. How to find the area of a sector?






24. x^(-y)=






25. 25^(1/2) or sqrt. 25 =






26. If a=-1 and b=3 - what is the value of (4(a^3)(b^2) - 12(a^2)(b^5)) / (16(a^3)(b^2))?






27. Surface area for a cylinder?






28. Evaluate 4/11 + 11/12






29. A number is divisible by 4 is...






30. What is an arc of a circle?






31. Hector invested $6000. Part was invested in account with 9% simple annual interest - and the rest in account with 7% simple annual interest. If he earned $490 in the first year of these investments - how much did he invest in each account?






32. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






33. If Madagascar'S exports totaled 1.3 billion in 2009 - and 4% came from China - what was the value in millions of the country'S exports to China?






34. In a triangle where the two legs are 4 and 3 - what is the value of a line directly intersecting the middle coming from the meeting point of the two legs?






35. A cylinder has a surface area of 22pi. If the cylinder has a height of 10 - what is the radius?






36. Factor a^2 + 2ab + b^2






37. Can the input value of a function have more than one output value (i.e. x: y - y1)?






38. Which quadrant is the upper left hand?






39. Ratio of ages of Anna and Emma is 3:5 and of Emma and Nicolas is 3:5. What is the ratio of Anna to Nicholas' ages?






40. What are the integers?






41. If 4500 is invested at a simple interest rate of 6% - what is the value of the investment after 10 months?






42. Describe the relationship between 3x^2 and 3(x - 1)^2






43. Define a 'Term' -






44. Formula to find a circle'S circumference from its diameter?






45. What is the graph of f(x) shifted right c units or spaces?






46. How many sides does a hexagon have?






47. Legs 5 - 12. Hypotenuse?






48. A brick with dimensions 10. 15 and 25 weighs 1.5 kg. A second brick (same density) has dimensions 12 - 18 - and 30. What is the weight of the second brick?






49. To multiply a number by 10^x






50. What is the empty set?