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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. Is 0 even or odd?






2. a^0 =






3. 4.809 X 10^7 =






4. Hector invested $6000. Part was invested in account with 9% simple annual interest - and the rest in account with 7% simple annual interest. If he earned $490 in the first year of these investments - how much did he invest in each account?






5. What is the order of operations?






6. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






7. 10<all primes<20






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






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






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






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






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






13. Reduce: 4.8 : 0.8 : 1.6






14. 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)?






15. Solve the quadratic equation ax^2 + bx + c= 0






16. If a=-1 and b=3 - what is the value of (4(a^3)(b^2) - 12(a^2)(b^5)) / (16(a^3)(b^2))?






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






18. 5x^2 - 35x -55 = 0






19. 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?






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






21. 25^(1/2) or sqrt. 25 =






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






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






24. To convert a decimal to a percent...






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






26. x^4 + x^7 =






27. 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?






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






29. 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?






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






31. The four angles around a point measure y - 2y - 35 and 55 respectively. What is the value of y?






32. Define a 'monomial'






33. Can you add sqrt 3 and sqrt 5?






34. A number is divisible by 6 if...






35. Convert 0.7% to a fraction.






36. What are the rational numbers?






37. What are the integers?






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






39. Which quadrant is the upper right hand?






40. 8.84 / 5.2






41. Legs 5 - 12. Hypotenuse?






42. What does the graph (x+2)^2 + (y+2)^2 = 9 look like?






43. Which quandrant is the lower right hand?






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






45. 6w^2 - w - 15 = 0






46. Number of degrees in a triangle






47. 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)]?






48. Surface area for a cylinder?






49. 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






50. Can the output value of a function have more than one input value?







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