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






2. 20<all primes<30






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






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






5. 50 < all primes< 60






6. 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.






7. Which quadrant is the upper left hand?






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






9. What is the name of set with a number of elements which cannot be counted?






10. Can you add sqrt 3 and sqrt 5?






11. 413.03 x 10^(-4) =






12. 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?






13. (x^2)^4






14. Define a 'monomial'






15. 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?






16. Suppose that the graph of f(x) is the result of sliding the graph of y=2x^2 down 3 units of spaces. What is the new equation?






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






18. What are the irrational numbers?


19. What is a tangent?






20. 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?






21. Evaluate (4^3)^2






22. What is the percent formula?






23. (-1)^2 =






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






25. What is an arc of a circle?






26. x^4 + x^7 =






27. What is the area of a regular hexagon with side 6?






28. 1/8 in percent?






29. 4.809 X 10^7 =






30. 10^6 has how many zeroes?






31. 40 < all primes<50






32. Which quadrant is the upper right hand?






33. 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






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






35. 70 < all primes< 80






36. 5/8 in percent?






37. A triangle is inscribed in a semi circle with legs 5 and 12. What is the circumfermence of the semicircle?






38. Legs 5 - 12. Hypotenuse?






39. How to find the area of a sector?






40. What are the real numbers?






41. Reduce: 4.8 : 0.8 : 1.6






42. How many sides does a hexagon have?






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






44. Factor a^2 + 2ab + b^2






45. 0^0






46. 30< all primes<40






47. 5/6 in percent?






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






49. Formula for the area of a circle?






50. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?