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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. 2sqrt4 + sqrt4 =






2. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






3. 5/6 in percent?






4. How to find the area of a sector?






5. What is the coefficient of the x^2 term in the product of (x + 1)(x + 2)(x -1)?






6. x^(-y)=






7. To convert a percent to a fraction....






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






9. Suppose that the graph of f(x) is the result of stretching y=x + 5 away from the x-axis by a factor of 2. What is the new equation for the graph f(x)?






10. Which quandrant is the lower right hand?






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






12. 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?






13. 5/8 in percent?






14. If 4500 is invested at a simple interest rate of 6% - what is the value of the investment after 10 months?






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






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






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






18. Simplify the expression [(b^2 - c^2) / (b - c)]






19. Can you simplify sqrt72?






20. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






21. What is an exterior angle?






22. a^2 + 2ab + b^2






23. 70 < all primes< 80






24. x^4 + x^7 =






25. Reduce: 4.8 : 0.8 : 1.6






26. What is a subset?






27. Ratio of ages of Anna and Emma is 3:5 and of Emma and Nicolas is 3:5. What is the ratio of Anna to Nicholas' ages?






28. What is an arc of a circle?






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






30. Order of quadrants:






31. What are 'Supplementary angles?'






32. 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?






33. If 8 schools are in a conference - how many games are played if each team plays each other exactly once?






34. Length of an arc of a circle?






35. 10^6 has how many zeroes?






36. Surface area for a cylinder?






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






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






39. 8.84 / 5.2






40. What is the ratio of the sides of an isosceles right triangle?






41. What is the percent formula?






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






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






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






45. If the two sides of a triangle are unequal then the longer side...






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






47. 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)]?






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






49. 0^0






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