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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. A number is divisible by 6 if...






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






3. Describe the relationship between the graphs of x^2 and (1/2)x^2






4. If Madagascar'S exports totaled 1.3 billion in 2009 - and 4% came from China - what was the value in millions of the country'S exports to China?






5. 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?






6. What transformation occurs if point C is reflected over the x-axis and then the y-axis?






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






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






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






10. What are 'Supplementary angles?'






11. What is the 'union' of A and B?






12. In similar hexagons - the ratio of the areas is 16:25. What is the ratio of their corresponding sides?






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






14. 25^(1/2) or sqrt. 25 =






15. x^2 = 9. What is the value of x?






16. 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?






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






18. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. In how many ways can the judges award the 3 prizes?






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






20. What are the smallest three prime numbers greater than 65?






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






22. (-1)^3 =






23. What is the 'domain' of a function?






24. What are the roots of the quadrinomial x^2 + 2x + 1?






25. To convert a percent to a fraction....






26. What is a central angle?






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






28. What is the slope of a horizontal line?






29. How many sides does a hexagon have?






30. Legs 6 - 8. Hypotenuse?






31. Convert 0.7% to a fraction.






32. Formula for the area of a circle?






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






34. 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?






35. (6sqrt3) x (2sqrt5) =






36. 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?






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






38. a^2 - b^2 =






39. What is the set of elements found in both A and B?






40. 1/2 divided by 3/7 is the same as






41. 20<all primes<30






42. 2sqrt4 + sqrt4 =






43. What is a subset?






44. A number is divisible by 4 is...






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






46. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






47. A cylinder has surface area 22pi. If the cylinder has a height of 10 - what is its radius?






48. 10^6 has how many zeroes?






49. Surface area for a cylinder?






50. What is a minor arc?

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