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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. The objects in a set are called two names:






2. Volume for a cylinder?






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






4. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






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






6. A brick with dimensions 10. 15 and 25 weighs 1.5 kg. A second brick (same density) has dimensions 12 - 18 - and 30. What is the weight of the second brick?






7. 1/8 in percent?






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






9. 10<all primes<20






10. What is the formula for computing simple interest?






11. What is a major arc?

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12. a^2 - b^2






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






16. Describe the relationship between 3x^2 and 3(x - 1)^2






17. What is the formula for compounded interest?






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






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






20. The perimeter of a square is 48 inches. The length of its diagonal is:






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






22. What are the members or elements of a set?






23. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






24. How many multiples does a given number have?






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






26. What is the side length of an equilateral triangle with altitude 6?






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






28. How to find the area of a sector?






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






30. 413.03 x 10^(-4) =






31. 40 < all primes<50






32. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






33. What is the empty set?






34. 6w^2 - w - 15 = 0






35. What is a central angle?






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






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






38. What is a piecewise equation?






39. 5/8 in percent?






40. The slope of a line perpendicular to (a/b)?






41. a^2 + 2ab + b^2






42. What is the percent formula?






43. 60 < all primes <70






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






45. How many sides does a hexagon have?






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






47. 0^0






48. What is the sum of the angles of a triangle?






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






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







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