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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 the 'union' of A and B?






2. What is the intersection of A and B?






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






4. x^(-y)=






5. Volume for a cylinder?






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






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






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






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. 1/6 in percent?






11. 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?






12. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






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






14. 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?






15. What does the graph x^2 + y^2 = 64 look like?






16. 70 < all primes< 80






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






18. What does scientific notation mean?






19. 2sqrt4 + sqrt4 =






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






21. What is a finite set?






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






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






24. Pi is a ratio of what to what?


25. Can you subtract 3sqrt4 from sqrt4?






26. a^0 =






27. The objects in a set are called two names:






28. A number is divisible by 4 is...






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






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






31. If a=-1 and b=3 - what is the value of (4(a^3)(b^2) - 12(a^2)(b^5)) / (16(a^3)(b^2))?






32. Legs 5 - 12. Hypotenuse?






33. How to find the diagonal of a rectangular solid?






34. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






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






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






37. What is a chord of a circle?






38. Formula of rectangle where l increases by 20% and w decreases by 20%






39. What are the real numbers?






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






41. x^2 = 9. What is the value of x?






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






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






44. 1/2 divided by 3/7 is the same as






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






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






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






48. What are complementary angles?






49. What is a central angle?






50. 1/8 in percent?