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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. 50 < all primes< 60






2. a^2 - 2ab + b^2






3. For similar triangles - the ratio of their corresponding sides is 2:3. What is the ratio of their areas?






4. Suppose that the graph of f(x) is the result of stretching y=x + 5 away from the x-axis by a factor of 2. What is the new equation for the graph f(x)?






5. A triangle is inscribed in a semi circle with legs 5 and 12. What is the circumfermence of the semicircle?






6. What is the formula for computing simple interest?






7. What is a major arc?

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8. What are the roots of the quadrinomial x^2 + 2x + 1?






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






10. Define a 'Term' -






11. What is it called when a point is reflected to the quadrant opposite it (i.e. I to III or II to IV)?






12. (-1)^3 =






13. (6sqrt3) x (2sqrt5) =






14. 0^0






15. a^2 - b^2






16. How many multiples does a given number have?






17. x^(-y)=






18. Formula for the area of a sector of a circle?






19. Formula for the area of a circle?






20. x^2 = 9. What is the value of x?






21. 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?






22. Reduce: 4.8 : 0.8 : 1.6






23. a^2 - b^2 =






24. x^6 / x^3






25. Formula to find a circle'S circumference from its radius?






26. What is a set with no members called?






27. If an inequality is multiplied or divided by a negative number....






28. How to determine percent decrease?






29. 1/8 in percent?






30. Volume for a cylinder?






31. Suppose that the graph of f(x) is the result of sliding the graph of y=2x^2 down 3 units of spaces. What is the new equation?






32. The objects in a set are called two names:






33. What is the 'Solution' for a system of linear equations?






34. From a box of 12 candles - you are to remove 5. How many different sets of 5 candles could you remove?






35. 30< all primes<40






36. A number is divisible by 4 is...






37. Circumference of a circle?






38. Factor x^2 - xy + x.






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






40. a^0 =






41. (-1)^2 =






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






43. The slope of a line perpendicular to (a/b)?






44. Can you subtract 3sqrt4 from sqrt4?






45. What are congruent triangles?






46. 10^6 has how many zeroes?






47. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






48. What is the 'Range' of a series of numbers?






49. What is the absolute value function?






50. What is a minor arc?

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