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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 are the real numbers?






2. What are the roots of the quadrinomial x^2 + 2x + 1?






3. What does scientific notation mean?






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






5. 5/8 in percent?






6. Formula to calculate arc length?






7. x^4 + x^7 =






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






9. a^0 =






10. What is the 'Range' of a function?






11. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






12. What are the irrational numbers?


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






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






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






16. What is the measure of an exterior angle of a regular pentagon?






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






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






19. Legs 6 - 8. Hypotenuse?






20. 60 < all primes <70






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






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






23. What is a piecewise equation?






24. 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?






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






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






27. 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?






28. Which quadrant is the upper left hand?






29. What is a finite set?






30. Area of a triangle?






31. What is an arc of a circle?






32. (-1)^3 =






33. (x^2)^4






34. 1/8 in percent?






35. 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.






36. 413.03 x 10^(-4) =






37. What is the empty set?






38. 10^6 has how many zeroes?






39. 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?






40. What is a chord of a circle?






41. What are congruent triangles?






42. 2sqrt4 + sqrt4 =






43. Can you subtract 3sqrt4 from sqrt4?






44. What are 'Supplementary angles?'






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






46. 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)]?






47. How to determine percent increase?






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






49. What is the 'Restricted domain of a function'?






50. How many multiples does a given number have?