## Test your basic knowledge |

# GRE Math: Common Errors

**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. What is a chord of a circle?**

**2. The larger the absolute value of the slope...**

**3. 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?**

**4. What is an isoceles triangle?**

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

**6. 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?**

**7. (-1)^3 =**

**8. 40 < all primes<50**

**9. What are 'Supplementary angles?'**

**10. 10^6 has how many zeroes?**

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

**12. Which quandrant is the lower right hand?**

**13. Define a 'Term' -**

**14. 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**

**15. What is the intersection of A and B?**

**16. Legs 5 - 12. Hypotenuse?**

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

**18. How to determine percent decrease?**

**19. 7/8 in percent?**

**20. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7**

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

**22. 8.84 / 5.2**

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

**24. What is the measure of an exterior angle of a regular pentagon?**

**25. Define an 'expression'.**

**26. (a^-1)/a^5**

**27. Evaluate 3& 2/7 / 1/3**

**28. Legs: 3 - 4. Hypotenuse?**

**29. 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?**

**30. Formula of rectangle where l increases by 20% and w decreases by 20%**

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

**32. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?**

**33. What is the absolute value function?**

**34. (6sqrt3) x (2sqrt5) =**

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

**36. 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?**

**37. Max and Min lengths for a side of a triangle?**

**38. 50 < all primes< 60**

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

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

**41. Whats the difference between factors and multiples?**

**42. What is a major arc?**

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

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

**45. 70 < all primes< 80**

**46. Which quadrant is the upper left hand?**

**47. 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?**

**48. 2sqrt4 + sqrt4 =**

**49. 25^(1/2) or sqrt. 25 =**

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