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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 finite set?






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






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






5. Formula for the area of a circle?






6. When the 'a' in the parabola is negative...






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






8. In a regular polygon with n sides - the formula for the sum of interior angles






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






10. 60 < all primes <70






11. a^2 - b^2






12. Can you subtract 3sqrt4 from sqrt4?






13. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. How many different people can get the three prizes?






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






15. Pi is a ratio of what to what?

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16. What is the side length of an equilateral triangle with altitude 6?






17. What are congruent triangles?






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






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






20. What is a chord of a circle?






21. x^6 / x^3






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






23. To convert a decimal to a percent...






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






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






26. When the 'a' in a parabola is positive....






27. Can you add sqrt 3 and sqrt 5?






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






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






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






31. The number of degrees in the largest angle of a triangle inscribed in a circle - in which the diameter of the circle is one side of the triangle.






32. Number of degrees in a triangle






33. To convert a percent to a fraction....






34. What are complementary angles?






35. What does the graph (x+2)^2 + (y+2)^2 = 9 look like?






36. Circumference of a circle?






37. What is the absolute value function?






38. What is the measure of an exterior angle of a regular pentagon?






39. Formula of rectangle where l increases by 20% and w decreases by 20%






40. Formula to calculate arc length?






41. (-1)^3 =






42. 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?






43. Order of quadrants:






44. Define a 'monomial'






45. 30< all primes<40






46. What is a set with no members called?






47. 10^6 has how many zeroes?






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 the order of operations?






50. What is the sum of the angles of a triangle?