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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. 5/6 in percent?






3. Evaluate (4^3)^2






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






5. Which is greater? 64^5 or 16^8






6. Write 10 -843 X 10^7 in scientific notation






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






8. Which is greater? 27^(-4) or 9^(-8)






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






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






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






12. 7/8 in percent?






13. Which quandrant is the lower right hand?






14. Reduce: 4.8 : 0.8 : 1.6






15. (-1)^2 =






16. Evaluate 3& 2/7 / 1/3






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






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






19. 4.809 X 10^7 =






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






21. How to determine percent decrease?






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






23. What is the ratio of the surface area of a cube with an edge of 10 to the surface area of a rectangular solid with dimensions 2 - 4 - and 6?






24. Ratio of ages of Anna and Emma is 3:5 and of Emma and Nicolas is 3:5. What is the ratio of Anna to Nicholas' ages?






25. (12sqrt15) / (2sqrt5) =






26. What is the formula for computing simple interest?






27. What are complementary angles?






28. T or F? Given d -e &f =/ 0 - [(d^3)e(f^5)] / 2d(e^3) / [3(d^2)(e^3)(f^7)] / [6(e^5)(f^2)]?






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






30. Define a 'monomial'






31. 70 < all primes< 80






32. 30< all primes<40






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






34. Circumference of a circle?






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






36. 5x^2 - 35x -55 = 0






37. Legs 5 - 12. Hypotenuse?






38. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






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






40. 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?






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






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






43. Simplify (a^2 + b)^2 - (a^2 - b)^2






44. How many sides does a hexagon have?






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






46. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






47. Which quadrant is the upper right hand?






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






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






50. What is the formula for compounded interest?