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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. Length of an arc of a circle?






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






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






4. Legs: 3 - 4. Hypotenuse?






5. x^6 / x^3






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






7. What is the slope of a vertical line?


8. What is a major arc?


9. Which quadrant is the upper left hand?






10. To convert a percent to a fraction....






11. What are the integers?






12. 10<all primes<20






13. 1/8 in percent?






14. x^4 + x^7 =






15. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






17. What are 'Supplementary angles?'






18. What is a finite set?






19. What is the percent formula?






20. What are the smallest three prime numbers greater than 65?






21. 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?






22. What is a piecewise equation?






23. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






24. 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?






25. Convert 0.7% to a fraction.






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






27. What are complementary angles?






28. If r - t - s & u are distinct - consecutive prime numbers - less than 31 - which of the following could be an average of them (4 - 4.25 - 6 - 9 - 24 - 22 - 24)






29. 5/6 in percent?






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






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






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






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






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






35. Formula to calculate arc length?






36. Legs 5 - 12. Hypotenuse?






37. 30< all primes<40






38. 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)?






39. If 10800 is invested at a simple interest rate of 4% - what is the value of the investment after 18 months?






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






41. 6w^2 - w - 15 = 0






42. What is the order of operations?






43. (6sqrt3) x (2sqrt5) =






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






45. 1/6 in percent?






46. Surface area for a cylinder?






47. For what values should the domain be restricted for the function f(x) = sqrt(x + 8)






48. What is the formula for computing simple interest?






49. What is a subset?






50. a^0 =