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GMAT Math Memorization

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. =5*8
165
40
10
68

2. =10^4
256
55
361
10 -000

3. Permutations: single source - order matters BUT only for a selection
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
323
49
5

4. =25^2
625
57
85
102

5. =3^3
81
100
9
27

6. =2^6
100
It becomes positive
64
98

7. =7^2
243
1.732050808
49
256

8. Right Isosceles triangle (lengths)?
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
180
Side - Side - Side^2
10 -000 -000 -000

9. 343^(1/3)
Add their exponents (6^2 *6^3 = 6^5)
243
One (1)
7

10. SQRT 2
100
1.414213562
4
NO

11. =6*19
y=mx+b where b is the y-intercept (the point which crosses the y-axis) m is the slope of the line - and x & y are the coordinates of some point on that line
20
114
6

12. =8^3
It becomes positive
216
512
1 -296

13. =7*11
77
6
A*B (Multiply both probabilities)
100 -000 -000

14. how do you find the range of a set of numbers?
234
10 -000 -000 -000
Subtract the smallest number from the greatest number
6

15. =6^4
1 -296
9
90
81

16. How do you tell if it's a permutation or combination?

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17. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
15
It gets smaller
6 -561
8

18. =3*3
39
100 -000 -000
8
9

19. =9^5
59 -049
64
135
6 -561

20. =2^3
221
2
56
8

21. =14*18
252
50
70
10 -000

22. even x even =
68
Even
88
0 (any fraction with 0 on top is 0)

23. 64^(1/3)
4
1 -000 -000
4 -096
64

24. =3*6
18
2
Permutations ask for 'arraingements' Combinations ask for 'Groups'
95

25. SQRT 4 -096
176
156
64
112

26. =4*20
Multiply both fractions to get a common denominator add or subtract as usual
4 -096
80
340

27. =3*18
160
266
54
Itself

28. =10^7
240
400
225
10 -000 -000

29. Key to percent increase/decrease
13
68
75
Amount of increase/original amount = x/100 (Then cross multiply to find x)

30. =14*15
78
4 -096
210
44

31. =13*15
6
It gets smaller
49
195

32. =10^8
A*B (Multiply both probabilities)
256
100 -000 -000
75

33. =13*19
247
NO
272
Base * Height

34. =4*18
126
306
Multiply both fractions to get a common denominator add or subtract as usual
72

35. Exponents - Raising a power to a power
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
20
100 -000
Odd

36. =4*6
24
Itself
Combinations don't care about the order of the problems
306

37. SQRT 256
16
165
90
63

38. =7*8
56
3:4:5 -- 5:12:13 -- 7:24:25
132
Number of outcomes you want/total number of possible outcomes

39. SQRT 9
165
80
3
16

40. =6*11
66
42
65
64

41. =11*20
220
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
400
9

42. =10^3
Odd
36
1 -000
210

43. odd + odd =
Even
3 -125
121
216

44. =7^3
70
6
343
Will = 1 - Won't

45. =17*20
154
340
7
16

46. =14*19
266
56
204
153

47. Probability that A or B will happen?
80
A+B (Add both probabilities)
323
100 -000

48. 512^(1/3)
96
8
192
40

49. =11*13
33
143
32
7

50. 30:60:90 Right Triangle (Lenghts)
216
56
(x-y)^2
x:x^(1/3):2x