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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. 0^0






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






3. sqrt 2(sqrt 6)=






4. 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?






5. Formula for the area of a circle?






6. What is a set with no members called?






7. What is the formula for compounded interest?






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






9. 5x^2 - 35x -55 = 0






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






11. 25^(1/2) or sqrt. 25 =






12. Which quadrant is the upper left hand?






13. The number of degrees in the largest angle of a triangle inscribed in a circle - in which the diameter of the circle is one side of the triangle.






14. Can the input value of a function have more than one output value (i.e. x: y - y1)?






15. How to determine percent increase?






16. What does the graph x^2 + y^2 = 64 look like?






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






18. a^2 + 2ab + b^2






19. What is a major arc?

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20. 20<all primes<30






21. What is the formula for computing simple interest?






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






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






24. a^0 =






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






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






27. 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?






28. Formula to find a circle'S circumference from its radius?






29. When does a function automatically have a restricted domain (2)?






30. What is the maximum value for the function g(x) = (-2x^2) -1?






31. Suppose you have a set of n objects - and you want to select k of them - but the order doesn'T matter. What formula do you use to determine the number of combinations of n objects taken k at a time?






32. What is the empty set?






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






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






35. a^2 - b^2






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






37. Legs: 3 - 4. Hypotenuse?






38. Simplify the expression [(b^2 - c^2) / (b - c)]






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






40. 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)]?






41. What is the common monomial factor in the expression 4(c^3)d - (c^2)(d^2) + 2cd?






42. Find the surface area of a cylinder with radius 3 and height 12.






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






44. 3/8 in percent?






45. What is a minor arc?

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46. (12sqrt15) / (2sqrt5) =






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






48. How to determine percent decrease?






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






50. (x^2)^4