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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. 0^0






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






3. Can you add sqrt 3 and sqrt 5?






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






5. A number is divisible by 4 is...






6. What is a chord of a circle?






7. What are congruent triangles?






8. How to determine percent decrease?






9. 10^6 has how many zeroes?






10. Factor x^2 - xy + x.






11. Define a 'Term' -






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






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






14. Whats the difference between factors and multiples?






15. 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?






16. What is the 'union' of A and B?






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






18. What is the slope of a horizontal line?






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






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






21. Can you subtract 3sqrt4 from sqrt4?






22. 5/8 in percent?






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






24. 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))?






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






26. What are the integers?






27. Which is greater? 200x^295 or 10x^294?






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






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






30. When the 'a' in a parabola is positive....






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






32. x^6 / x^3






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






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






35. (a^-1)/a^5






36. Legs 6 - 8. Hypotenuse?






37. What is a minor arc?

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38. In a triangle where the two legs are 4 and 3 - what is the value of a line directly intersecting the middle coming from the meeting point of the two legs?






39. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






40. How many sides does a hexagon have?






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






42. When the 'a' in the parabola is negative...






43. How to find the area of a sector?






44. What is the percent formula?






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






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






47. What is the slope of a vertical line?

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48. (-1)^3 =






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






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