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GMAT Quantitative General

Subjects : gmat, math
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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