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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. Factor a^2 + 2ab + b^2






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






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






4. 3/8 in percent?






5. What is a parabola?






6. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. In how many ways can the judges award the 3 prizes?






7. 2sqrt4 + sqrt4 =






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






9. Which quadrant is the upper right hand?






10. 10^6 has how many zeroes?






11. Convert 0.7% to a fraction.






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






13. What is an exterior angle?






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






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






16. To multiply a number by 10^x






17. Find the surface area of a cylinder with radius 3 and height 12.






18. Can you add sqrt 3 and sqrt 5?






19. To convert a decimal to a percent...






20. Volume for a cylinder?






21. 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






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






23. Define a 'monomial'






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






25. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






26. What transformation occurs if point C is reflected over the x-axis and then the y-axis?






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






28. What does scientific notation mean?






29. How many 3-digit positive integers are even and do not contain the digit 4?






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






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






32. Length of an arc of a circle?






33. Order of quadrants:






34. If 4500 is invested at a simple interest rate of 6% - what is the value of the investment after 10 months?






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






36. 5/6 in percent?






37. A cylinder has surface area 22pi. If the cylinder has a height of 10 - what is its radius?






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






39. 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?






40. A triangle is inscribed in a semi circle with legs 5 and 12. What is the circumfermence of the semicircle?






41. Is 0 even or odd?






42. a^2 + 2ab + b^2






43. (x^2)^4






44. P and r are factors of 100. What is greater - pr or 100?






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






46. What is a minor arc?

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47. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






48. 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.






49. Evaluate (4^3)^2






50. 1/6 in percent?