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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 a minor arc?






2. What is the surface area of a cylinder with radius 5 and height 8?






3. Legs 6 - 8. Hypotenuse?






4. 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?






5. 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)]?






6. a^2 - 2ab + b^2






7. a^0 =






8. (x^2)^4






9. Evaluate (4^3)^2






10. What are the real numbers?






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






12. 0^0






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






14. How many sides does a hexagon have?






15. For similar triangles - the ratio of their corresponding sides is 2:3. What is the ratio of their areas?






16. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






17. (12sqrt15) / (2sqrt5) =






18. How many multiples does a given number have?






19. 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?






20. What is the formula for compounded interest?






21. Area of a triangle?






22. How many digits are there between the decimal point and the first even digit in the decimal equivalent of 1/[(2^8)(5^3)]






23. 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?






24. 1/2 divided by 3/7 is the same as






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






26. a^2 - b^2






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






28. What is a subset?






29. If an inequality is multiplied or divided by a negative number....






30. What is the slope of a vertical line?






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






32. Convert 0.7% to a fraction.






33. To multiply a number by 10^x






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






35. 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






36. 20<all primes<30






37. Which quandrant is the lower right hand?






38. Describe the relationship between 3x^2 and 3(x - 1)^2






39. Define an 'expression'.






40. 5/6 in percent?






41. What is an isoceles triangle?






42. Can you add sqrt 3 and sqrt 5?






43. What is a parabola?






44. 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)






45. What is an arc of a circle?






46. What is a tangent?






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






48. Legs: 3 - 4. Hypotenuse?






49. What is the order of operations?






50. Define a 'monomial'