## Test your basic knowledge |

# GMAT Quantitative General

**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. The average of 5 numbers is 2. After one number is deleted - the new average is -3. What number was deleted?**

**2. Number of integers from A to B inclusive = B - A + 1 - How many consecutive integers are there from 73 through 419 - inclusive?**

**3. The number of ways independent events can occur together.**

**4. gcd(m,n)**

**5. The number of outcomes that result in A divided by the total number of possible outcomes.**

**6. How to check whether a number is a multiple of 3.**

**7. Average Rate: Average speed**

**8. 2nd Rule of Probability: P(E) = 1 - P(not E)**

**9. Sum of consecutive numbers**

**10. 2n+1 - 2n+3 - 2n+5**

**11. 4th rule of Probability**

**12. The average of consecutive numbers**

**13. gcd(m,n)*lcm(m,n)**

**14. To determine multiple-event probability where each individual event must occur in a certain way.**

**15. Sq. rt(2)**

**16. Set Problems formula**

**17. Volume of a sphere**

**18. 3rd Rule of Probability: Conditional Probability**

**19. Simple probability**

**20. Simple Interest formula (remember this is only the interest earned - not the total amount of money present in the bank after interest earned)**

**21. How many liters of a solution that is 10% alcohol by volume must be added to 2 liters of a solution that is 50% alcohol by volume to create a solution that is 15% alcohol by volume?**

**22. 1. A and B < A or B 2. A or B > Individual probabilities of A - B 3. P(A and B) = P(A) x P(B) <-- 'fewer options' 4. P(A or B) = P(A) + P(B) <-- 'more options' - Probability of multiple events rules.**

**23. Some GMAT word problems involve groups with distinct 'either/or' categories (male/female - blue collar/white collar - etc.) The key is to do what with the information? 1. Find total number of possible outcomes. 2. Find the number of desired outcomes.**

**24. Since Mieko's average speed was 3/4 of Chan's - her time was 4/3 as long.**

**25. What to do with equations that have fractions**

**26. Combined Events: Not E = P(not E) = ?**

**27. Combined Events: E and F**

**28. Gross Profit formula**

**29. Dependent events: When are two events said to be dependent events?**

**30. 2n - 2n+2 - 2n+4**

**31. Multiples of 3**

**32. If $10 -000 is invested at 10% annual interest - compounded semi-annually - what is the balance after 1 year?**

**33. 0! = ?**

**34. Formula for area of a Trapezoid**

**35. Always try to factor**

**36. How to check whether a number is a multiple of 6**

**37. Indistinguishable events how to find the number of permutations**

**38. When you see an equation in factored form in a question?**

**39. Price purchased for by wholesaler**

**40. How many liters of a solution that is 15% salt must be added to 5 liters of a solution that is 8% salt so that the resulting mixture is 10% salt?**

**41. Average Rate: Average A per B**

**42. Odd and Even rule.**

**43. In general - difficult questions require how many steps to solve?**

**44. Probability and Geometry.**

**45. 1/8 = what %**

**46. Triangle abc with d on the outside with a line. What does d = ?**

**47. Formula for Mixed Group problems (involving Both/Neither)**

**48. Properties of 0**

**49. Inscribed Angle - Minor Arc**

**50. How to find all divisors of a number**