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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. Convert 0.7% to a fraction.






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






3. What is the third quartile of the following data set: 44 - 58 - 63 - 63 - 68 - 70 - 82






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






5. 20<all primes<30






6. x^6 / x^3






7. 1/8 in percent?






8. What number between 70 & 75 - inclusive - has the greatest number of factors?






9. Can you add sqrt 3 and sqrt 5?






10. What is a parabola?






11. Can the output value of a function have more than one input value?






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






13. 70 < all primes< 80






14. What is an isoceles triangle?






15. 4.809 X 10^7 =






16. What is the ratio of the sides of an isosceles right triangle?






17. Which quandrant is the lower right hand?






18. 5x^2 - 35x -55 = 0






19. What are complementary angles?






20. What is the slope of a horizontal line?






21. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






22. What transformation occurs if point C is reflected over the x-axis and then the y-axis?






23. How many multiples does a given number have?






24. 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?






25. 5/8 in percent?






26. Which quadrant is the lower left hand?






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






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






29. What is the 'Solution' for a set of inequalities.






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






31. If you have a set of n objects - but you only want to order k of them - what formula do you use to determine the number of permutations?






32. What is an exterior angle?






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






34. 30< all primes<40






35. What is a central angle?






36. A number is divisible by 9 if...






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






38. sqrt 2(sqrt 6)=






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






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






41. What percent of 40 is 22?






42. Describe the relationship between the graphs of x^2 and (1/2)x^2






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






44. What is the formula for computing simple interest?






45. 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?






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






47. How to determine percent increase?






48. What is the empty set?






49. Surface area for a cylinder?






50. 50 < all primes< 60