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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 ratio of the sides of an isosceles right triangle?






2. x^4 + x^7 =






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






4. Convert 0.7% to a fraction.






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






6. Which is greater? 27^(-4) or 9^(-8)






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






8. 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?






9. Circumference of a circle?






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






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






12. 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.






13. 50 < all primes< 60






14. What is a central angle?






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






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






17. 6w^2 - w - 15 = 0






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






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






20. What are 'Supplementary angles?'






21. What is a set with no members called?






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






23. 0^0






24. Area of a triangle?






25. 10^6 has how many zeroes?






26. Legs 5 - 12. Hypotenuse?






27. If r - t - s & u are distinct - consecutive prime numbers - less than 31 - which of the following could be an average of them (4 - 4.25 - 6 - 9 - 24 - 22 - 24)






28. How to determine percent decrease?






29. What is a finite set?






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






31. 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?






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






33. Define a 'monomial'






34. Formula to find a circle'S circumference from its radius?






35. In a regular polygon with n sides - the formula for the sum of interior angles






36. Can you add sqrt 3 and sqrt 5?






37. 70 < all primes< 80






38. The larger the absolute value of the slope...






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






41. Which quandrant is the lower right hand?






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






43. 5x^2 - 35x -55 = 0






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






45. In a triangle inscribed inside a circle - where the diameter is one side of the triangle - which angle is largest?






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






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






48. Legs: 3 - 4. Hypotenuse?






49. How many multiples does a given number have?






50. 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?