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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. 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)]?






2. What is the coefficient of the x^2 term in the product of (x + 1)(x + 2)(x -1)?






3. 1/8 in percent?






4. What is a central angle?






5. What is the 'Range' of a function?






6. What is the 'Range' of a series of numbers?






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






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






9. What is the slope of a horizontal line?






10. Which quadrant is the upper right hand?






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






12. 2sqrt4 + sqrt4 =






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






14. To convert a percent to a fraction....






15. a^0 =






16. Reduce: 4.8 : 0.8 : 1.6






17. What does scientific notation mean?






18. Define a 'Term' -






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






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






21. Which quadrant is the upper left hand?






22. Which is greater? 200x^295 or 10x^294?






23. What is the slope of a vertical line?

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24. 20<all primes<30






25. What is the intersection of A and B?






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






27. What is it called when a point is reflected to the quadrant opposite it (i.e. I to III or II to IV)?






28. 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?






29. What is a subset?






30. How to determine percent decrease?






31. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






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






33. When the 'a' in a parabola is positive....






34. What is the order of operations?






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






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. 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?






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






39. How many 3-digit positive integers are even and do not contain the digit 4?






40. 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)?






41. a^2 - b^2






42. (-1)^2 =






43. Define an 'expression'.






44. 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))?






45. 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?






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






47. What is the 'Solution' for a system of linear equations?






48. 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?






49. 3/8 in percent?






50. 25^(1/2) or sqrt. 25 =







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