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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. How many sides does a hexagon have?






2. What are the irrational numbers?

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






4. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






5. Evaluate (4^3)^2






6. (12sqrt15) / (2sqrt5) =






7. 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?






8. What are congruent triangles?






9. Legs: 3 - 4. Hypotenuse?






10. What is a major arc?

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






12. 6w^2 - w - 15 = 0






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






14. What is the surface area of a cylinder with radius 5 and height 8?






15. Number of degrees in a triangle






16. What is an isoceles triangle?






17. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






18. Legs 6 - 8. Hypotenuse?






19. 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?






20. What is an arc of a circle?






21. What is a piecewise equation?






22. Formula for the area of a circle?






23. If an inequality is multiplied or divided by a negative number....






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






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






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






27. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






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






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






30. What are 'Supplementary angles?'






31. Can the output value of a function have more than one input value?






32. To convert a decimal to a percent...






33. Evaluate 4/11 + 11/12






34. What does scientific notation mean?






35. Nine coins are tossed simultaneously. In how many of the outcomes will the fourth coin tossed show heads?






36. a^2 + 2ab + b^2






37. 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?






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






39. a^2 - b^2






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






41. (a^-1)/a^5






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






43. When does a function automatically have a restricted domain (2)?






44. 5 bakeries sell an average of 300 muffins per bakery per day. If 2 stop making muffins but the total muffins sold stays the same - what is the average of muffins per bakery sold among the remaining?






45. What is the empty set?






46. (-1)^3 =






47. Length of an arc of a circle?






48. The ratio of the areas of two similar polygons is ...






49. Suppose that the graph of f(x) is the result of sliding the graph of y=2x^2 down 3 units of spaces. What is the new equation?






50. What is a parabola?