## Test your basic knowledge |

# GRE High Frequency Math Terms

**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. Explain the difference between handling a permutation versus a combination.**

**2. HIGH: What is the unfactored version of (x-y) ?**

**3. Explain how to solve for 7/**

**4. If something is possible but not certain - what is the numeric range of probability of it happening?**

**5. How many degrees does a circle contain?**

**6. What is one misleading characteristic of quadratic equations that will be exploited on the GRE?**

**7. Probability Formula**

**8. a - b is equal to**

**9. HIGH: What is the side ratio for a 30:60:90 triangle?**

**10. Explain how to calculate an average (arithmetic mean)**

**11. Explain the special properties of zero.**

**12. HIGH: How do you get rid of the fraction in this equation: 5x + 3/2 = 7x**

**13. What'S a handy rough estimate for a circle'S perimeter - if you know it'S diameter?**

**14. An integer is divisible by 6 if...**

**15. What are 'vertical angles'?**

**16. If x = 144 - does v144 = x?**

**17. HIGH: What is the factored version of x + 2xy + y ?**

**18. Solve this: v6 * -v6 = ?**

**19. HIGH: How do you multiply and divide square roots?**

**20. HIGH: Simplify this: v75/v27**

**21. An integer is divisible by 9 if...**

**22. What is the 'Third side' rule for triangles?**

**23. HIGH: Rough est. of v1 =**

**24. HIGH: What is the unfactored version of x-y ?**

**25. What is the sum of any 'big' angle and any 'Small' angle?**

**26. HIGH: Rough est. of v3 =**

**27. HIGH: x^-n is equal to**

**28. What degree angle is a line?**

**29. HIGH: What is the formula for the diagonal of any square?**

**30. What is the formula to determine probability?**

**31. How do you calculate the probability of EITHER one event OR another event happening? (Probability of A or B)**

**32. Define a factorial of a number - and how it is written.**

**33. HIGH: Describe how to deal with 2 sets of parentheses.**

**34. An integer is divisible by 2 if...**

**35. How do you solve a permutation?**

**36. How do you solve a combination?**

**37. What is a 'Right' triangle?**

**38. HIGH: What is the factored version of (x+y)(x-y) ?**

**39. What is the equation for a group problem?**

**40. Simplify this: v32**

**41. Convert to a percentage: 2/5**

**42. An integer is divisible by 3 if...**

**43. HIGH: How much of your times table should you know - for the GRE?**

**44. An integer is divisible by 8 if...**

**45. Define the median of a set of numbers - and how to find it for an odd and even number of values in a set.**

**46. HIGH: What is the unfactored version of (x+y) ?**

**47. What number goes on the bottom of a probability fraction?**

**48. What is the name of a line that extends from the center of a circle to the edge of a circle?**

**49. HIGH: How do you multiply powers with the same base?**

**50. If something is certain to happen - how is the probability of this event expressed mathematically?**