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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. What is the set of elements which can be found in either A or B?






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






3. (x^2)^4






4. What are congruent triangles?






5. What is the name for a grouping of the members within a set based on a shared characteristic?






6. What is a tangent?






7. What percent of 40 is 22?






8. 413.03 x 10^(-4) =






9. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






10. The ratio of the areas of two similar polygons is ...






11. What is the 'union' of A and B?






12. Pi is a ratio of what to what?

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13. What is the percent formula?






14. 20<all primes<30






15. What is the area of a regular hexagon with side 6?






16. What is the 'domain' of a function?






17. How to find the circumference of a circle which circumscribes a square?






18. 60 < all primes <70






19. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






20. What is the formula for compounded interest?






21. Suppose you have a set of n objects - and you want to select k of them - but the order doesn'T matter. What formula do you use to determine the number of combinations of n objects taken k at a time?






22. a^2 + 2ab + b^2






23. Order of quadrants:






24. The larger the absolute value of the slope...






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






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






27. 1/2 divided by 3/7 is the same as






28. 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?






29. Volume for a cylinder?






30. Length of an arc of a circle?






31. 5/6 in percent?






32. Simplify the expression [(b^2 - c^2) / (b - c)]






33. The four angles around a point measure y - 2y - 35 and 55 respectively. What is the value of y?






34. What is the coefficient of the x^2 term in the product of (x + 1)(x + 2)(x -1)?






35. If the two sides of a triangle are unequal then the longer side...






36. Which quandrant is the lower right hand?






37. 30< all primes<40






38. What is the slope of a horizontal line?






39. How many sides does a hexagon have?






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






41. A number is divisible by 6 if...






42. 1/8 in percent?






43. What is the ratio of the sides of a 30-60-90 triangle?






44. Which quadrant is the upper right hand?






45. Area of a triangle?






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






47. How to find the diagonal of a rectangular solid?






48. How many digits are there between the decimal point and the first even digit in the decimal equivalent of 1/[(2^8)(5^3)]






49. What is a piecewise equation?






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