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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. What is a tangent?






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






3. x^4 + x^7 =






4. 10^6 has how many zeroes?






5. Pi is a ratio of what to what?


6. Circumference of a circle?






7. x^6 / x^3






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






9. 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?






10. How to find the circumference of a circle which circumscribes a square?






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






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






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






15. Can you simplify sqrt72?






16. What are the integers?






17. (-1)^3 =






18. What is the intersection of A and B?






19. Solve the quadratic equation ax^2 + bx + c= 0






20. 7/8 in percent?






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






22. 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?






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






24. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






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






26. What are 'Supplementary angles?'






27. Formula to find a circle'S circumference from its diameter?






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






29. What is the absolute value function?






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






31. 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?






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






33. 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






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






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






36. What is a finite set?






37. a^2 - 2ab + b^2






38. (x^2)^4






39. Which quadrant is the upper right hand?






40. How to determine percent decrease?






41. A number is divisible by 6 if...






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






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






44. What is the formula for compounded interest?






45. 5x^2 - 35x -55 = 0






46. A number is divisible by 3 if ...






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






48. How to determine percent increase?






49. Area of a triangle?






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