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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. 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?






2. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






3. 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?






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






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






6. What is the side length of an equilateral triangle with altitude 6?






7. Length of an arc of a circle?






8. (x^2)^4






9. How to find the area of a sector?






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






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






12. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






13. a^0 =






14. 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?






15. 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






16. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






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






18. 20<all primes<30






19. 7/8 in percent?






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






21. Define a 'monomial'






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






23. In a triangle inscribed inside a circle - where the diameter is one side of the triangle - which angle is largest?






24. 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?






25. (-1)^2 =






26. Is 0 even or odd?






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






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






29. 0^0






30. 6w^2 - w - 15 = 0






31. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






32. What are the real numbers?






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






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






35. x^4 + x^7 =






36. Factor x^2 - xy + x.






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






38. Evaluate 4/11 + 11/12






39. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






40. What does scientific notation mean?






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






42. What are 'Supplementary angles?'






43. 60 < all primes <70






44. The objects in a set are called two names:






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






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






47. How to determine percent increase?






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






49. 4.809 X 10^7 =






50. 8.84 / 5.2