# GMAT Quantitative General

Subjects : gmat, 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. (1/4)^2

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

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

4. gcd(m,n)

5. How to check whether a number is a multiple of 4.

6. The number of ways independent events can occur together.

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

8. What to do with equations that have fractions

9. 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?

10. Number added or deleted

11. 4th rule of Probability

12. Average Rate: Average speed

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

14. Inscribed Angle - Minor Arc

15. Sum of consecutive numbers

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

17. 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.

18. How to check for a prime number.

19. How to check whether a number is a multiple of 3.

20. Price sold for by retailer (after markup)

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

22. Circular permutation: The number of ways to arrange n distinct objects along a fixed circle is?

23. Compound interest rule

24. Quadratic formula

25. Properties of 0

26. Sq. rt(3)

27. What does the Sum of the angles in a Regular Polygon formula look like?

28. Intersecting Sets

29. Percent Formula

30. Set Problems formula

31. The average of consecutive numbers

32. 45-45-90 triangle basic lengths of sides

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

34. Think of averages as what? The average of 3 - 4 - 5 - and x is 5. What is x? 3 is 2 less than 5 4 is 1 less than 5 - 5 is the average - x = 5 + 3 = 8

35. Sq. rt(2)

36. Odd Factors

37. 3^3 x 4^3 = ?

38. If you have to guess in a problem - which ones should you guess? Especially if you have to plug numbers.

39. Volume of a sphere

40. Indistinguishable events how to find the number of permutations

41. Permutations: Order Matters

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

43. Multiples of 3

44. 2nd Rule of Probability: P(E) = 1 - P(not E)

45. How do you multiply roots together.

46. Three triangle length patterns

47. Always try to factor

48. 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.

49. 3rd Rule of Probability: Conditional Probability

50. Lowest Common Multiple 60: 2 x 2 x 3 x 5 - 72: 2 x 2 x 2 x 3 x 3 - LCM: 2 x 2 x 2 x 3 x 3 x 5