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






2. Formula for the area of a sector of a circle?






3. 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?






4. The four angles around a point measure y - 2y - 35 and 55 respectively. What is the value of y?






5. To convert a decimal to a percent...






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






7. 25^(1/2) or sqrt. 25 =






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






9. For what values should the domain be restricted for the function f(x) = sqrt(x + 8)






10. If 10800 is invested at a simple interest rate of 4% - what is the value of the investment after 18 months?






11. What percent of 40 is 22?






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






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






14. A number is divisible by 4 is...






15. How to determine percent decrease?






16. What is the 'Solution' for a set of inequalities.






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






18. 50 < all primes< 60






19. Order of quadrants:






20. What is the formula for computing simple interest?






21. What is the set of elements found in both A and B?






22. 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?






23. 0^0






24. Legs: 3 - 4. Hypotenuse?






25. Which quandrant is the lower right hand?






26. a^0 =






27. What does the graph (x+2)^2 + (y+2)^2 = 9 look like?






28. a^2 + 2ab + b^2






29. 30< all primes<40






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






31. What is an isoceles triangle?






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






33. 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)






34. 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?






35. If the 80th percentile of the measurements is 72degrees - about how many measurments are between 69 degrees and 72 degrees? Round your answer to the nearest tenth






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






37. What is it called when a point is reflected to the quadrant opposite it (i.e. I to III or II to IV)?






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






39. 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?






40. Can you add sqrt 3 and sqrt 5?






41. a^2 - b^2






42. How many sides does a hexagon have?






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






44. 5x^2 - 35x -55 = 0






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






46. What is a piecewise equation?






47. Formula to find a circle'S circumference from its diameter?






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






49. How to determine percent increase?






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