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






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






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






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






5. 1/6 in percent?






6. Nine coins are tossed simultaneously. In how many of the outcomes will the fourth coin tossed show heads?






7. Which quandrant is the lower right hand?






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






9. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






10. What is a major arc?

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11. Suppose that the graph of f(x) is the result of stretching y=x + 5 away from the x-axis by a factor of 2. What is the new equation for the graph f(x)?






12. What is an isoceles triangle?






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






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






15. What are the real numbers?






16. 413.03 x 10^(-4) =






17. What is the slope of a vertical line?

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18. Evaluate (4^3)^2






19. 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)]?






20. What is the absolute value function?






21. What is a set with no members called?






22. What are the integers?






23. A number is divisible by 4 is...






24. 10<all primes<20






25. Formula to calculate arc length?






26. 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?






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






28. x^6 / x^3






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






30. From a box of 12 candles - you are to remove 5. How many different sets of 5 candles could you remove?






31. Max and Min lengths for a side of a triangle?






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






33. What is the formula for compounded interest?






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






35. How many sides does a hexagon have?






36. Legs 6 - 8. Hypotenuse?






37. What are the rational numbers?






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. What is the 'domain' of a function?






40. A company places a 6-symbol code on each product. The code consists of the letter T - followed by 3 numerical digits - and then 2 consonants (Y is a conson). How many codes are possible?






41. 5 bakeries sell an average of 300 muffins per bakery per day. If 2 stop making muffins but the total muffins sold stays the same - what is the average of muffins per bakery sold among the remaining?






42. To convert a decimal to a percent...






43. 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?






44. What is a parabola?






45. (-1)^2 =






46. x^4 + x^7 =






47. Is 0 even or odd?






48. 1/8 in percent?






49. Number of degrees in a triangle






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