Test your basic knowledge |

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 formula for compounded interest?






2. 8.84 / 5.2






3. (-1)^3 =






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






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






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






7. What are the rational numbers?






8. Which quadrant is the upper right hand?






9. 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?






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






11. What is a piecewise equation?






12. What is a chord of a circle?






13. Simplify 9^(1/2) X 4^3 X 2^(-6)?






14. To multiply a number by 10^x






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






16. 2sqrt4 + sqrt4 =






17. Area of a triangle?






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






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






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






21. Simplify the expression (p^2 - q^2)/ -5(q - p)






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






23. 1/2 divided by 3/7 is the same as






24. What are the real numbers?






25. 60 < all primes <70






26. What is a subset?






27. Which is greater? 200x^295 or 10x^294?






28. What is an exterior angle?






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






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






31. sqrt 2(sqrt 6)=






32. 10^6 has how many zeroes?






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






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






35. Formula to calculate arc length?






36. 3/8 in percent?






37. If the 80th percentile of the measurements is 72degrees - about how many measurments are between 69 degrees and 72 degrees? Round your answer to the nearest tenth






38. (-1)^2 =






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






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






41. Evaluate (4^3)^2






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






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






44. 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?






45. Max and Min lengths for a side of a triangle?






46. 10<all primes<20






47. 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?






48. Can you simplify sqrt72?






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






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