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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. Exponents - Raising a power to a power
45
117
24
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6

2. 0/1 =
0 (any fraction with 0 on top is 0)
10 -000 -000
70
70

3. =3*10
154
30
80
171

4. =5^1
5
256
625
108

5. =9^5
144
59 -049
20
208

6. =4*4
120
16
8
57

7. If you raise a negative number to an odd power - what happens to the number?
135
171
It gets smaller
9

8. Odds that something doesn't happen?

9. =9^2
99
216
1.732050808
81

10. =9*16
Pr^2
64
27
144

11. =5*8
11
40
1
25

12. When is a number divisible by 6?
256
If it is divisible by both 2 and 3 (318 is because it is even and the sum of 3+1+8 is divisible by 3)
154
12

13. =7*14
54
Base * Height
100 -000
98

14. =8*17
324
Base * Height
216
136

15. =5^5
1.414213562
98
3 -125
25

16. =9*19
342
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
56
171

17. =2^2
112
112
4
1 -024

18. =4^3
96
40
64
260

19. =9*20
2
44
180
100 -000

20. =6^4
210
1 -296
60
11

21. 729^(1/3)
9
10 -000
243
40

22. =2^4
16
266
125
65

23. SQRT 49
171
7
216
Even

24. =9*18
162
323
5^(1/3)
152

25. =4^6
64
225
221
4 -096

26. SQRT 36
6
5
40
65

27. =9*13
75
16
117
209

28. =10^2
96
100
42
55

29. Odds that at least one thing will happen?

30. 27^(1/3)
3
8
9
32

31. SQRT 1 -000 -000
84
208
1 -000
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

32. how do you find the range of a set of numbers?
32
125
Subtract the smallest number from the greatest number
8

33. =10^5
x:x^(1/3):2x
135
100 -000
27

34. =12*20
132
105
240
216

35. even + even =
Even
Multiply the # of choices for each of the spots
15
2pr

36. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
39
280
It gets smaller
90

37. SQRT 64
100 -000
8
78
100

38. =10^10
3
10 -000 -000 -000
342
144

39. Combinations: single source - order doesn't matter
98
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
It becomes positive
512

40. =17*20
340
8
49
Even

41. =2^8
It becomes positive
256
64
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

42. Equation for a line?
Add or subtract the numbers on top and keep the same denominator
0 (any fraction with 0 on top is 0)
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
112

43. =14*17
126
56
It becomes positive
238

44. =11*16
176
Rate * Time = Distance (Hint: Draw a chart)
625
Amount of increase/original amount = x/100 (Then cross multiply to find x)

45. How do you find the median of a set of numbers?
30
133
16
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

46. =13*18
234
221
Number of outcomes you want/total number of possible outcomes
144

47. =11*11
121
198
128
20

48. Basic probability formula?
140
4
Number of outcomes you want/total number of possible outcomes
160

49. =7*8
60
It gets smaller
152
56

50. =7*18
126
136
4
36