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






2. 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?






3. What is a set with no members called?






4. 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?






5. What is the third quartile of the following data set: 44 - 58 - 63 - 63 - 68 - 70 - 82






6. What is a central angle?






7. 10^6 has how many zeroes?






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






9. What is the percent formula?






10. 20<all primes<30






11. What is the slope of a vertical line?

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






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






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






15. What is the 'Range' of a series of numbers?






16. 1/2 divided by 3/7 is the same as






17. 1/8 in percent?






18. What is the empty set?






19. Define a 'Term' -






20. Whats the difference between factors and multiples?






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






22. What is a piecewise equation?






23. 8.84 / 5.2






24. 6w^2 - w - 15 = 0






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






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






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






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






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






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






31. Surface area for a cylinder?






32. What is the measure of an exterior angle of a regular pentagon?






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






34. What is the order of operations?






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






36. What is the intersection of A and B?






37. What is an exterior angle?






38. Evaluate (4^3)^2






39. 50 < all primes< 60






40. Is 0 even or odd?






41. Can you subtract 3sqrt4 from sqrt4?






42. x^4 + x^7 =






43. x^(-y)=






44. How many multiples does a given number have?






45. 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?






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






47. To convert a percent to a fraction....






48. 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?






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






50. Which is greater? 64^5 or 16^8