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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. 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?






2. What is the formula for computing simple interest?






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






4. 5x^2 - 35x -55 = 0






5. What is the name for a grouping of the members within a set based on a shared characteristic?






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






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






8. x^(-y)=






9. x^6 / x^3






10. Formula for the area of a circle?






11. Can you simplify sqrt72?






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






13. Write 10 -843 X 10^7 in scientific notation






14. Evaluate 4/11 + 11/12






15. Reduce: 4.8 : 0.8 : 1.6






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






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






18. 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)






19. Number of degrees in a triangle






20. A number is divisible by 4 is...






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






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






23. 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?






24. What is the 'Range' of a function?






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






26. 0^0






27. 1/6 in percent?






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






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






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






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






32. Define an 'expression'.






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






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






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






36. Length of an arc of a circle?






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






38. How to find the circumference of a circle which circumscribes a square?






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






40. How to find the area of a sector?






41. 4.809 X 10^7 =






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






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






44. 6w^2 - w - 15 = 0






45. Whats the difference between factors and multiples?






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






47. 60 < all primes <70






48. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






49. 20<all primes<30






50. What is the order of operations?