Test your basic knowledge |

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

2. =2^7
128
252
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
Pick the # that occurs most frequently

3. =2^2
98
196
64
4

4. Probability that A or B will happen?
A+B (Add both probabilities)
255
125
114

5. 343^(1/3)
7
125
100 -000
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

6. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
Add or subtract the numbers on top and keep the same denominator
It gets smaller
64
128

7. =8*11
1 -024
Odd
88
68

8. =15^2
117
105
75
225

9. =10^2
49
2pr
100
9

10. =11*20
220
1 -296
128
176

11. =6*14
49
512
84
72

12. When is a number divisible by 4?

13. =8^2
Even
8
64
225

14. SQRT 64
48
8
2
9

15. Permutations: single source - order matters BUT only for a selection
304
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
625
54

16. =9*20
Odd
Even
48
180

17. =14*16
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
27
224
121

18. =14*19
117
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
266
96

19. =7*20
140
Amount of increase/original amount = x/100 (Then cross multiply to find x)
625
72

20. =4*19
76
6
12
84

21. SQRT 16
228
176
4
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)

22. =12*19
4 -096
72
228
243

23. 4/0 =
152
1.732050808
Undefined
304

24. =6^4
63
1 -296
729
x:x^(1/3):2x

25. Adding or subtracting fractions with the same denominator
Add or subtract the numbers on top and keep the same denominator
136
9
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)

26. Any number to the first power is?
4
256
256
Itself

27. =9*17
50
Odd
153
209

28. =7*17
A+B (Add both probabilities)
NO
6
119

29. =17*20
340
266
2
300

30. SQRT 121
11
9
Multiply the # of choices for each of the spots
85

31. If you raise a negative number to an odd power - what happens to the number?
64
It gets smaller
324
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

32. =2^3
Itself
8
1 -024
9

33. =5*6
65
30
306
64

34. =4*6
59 -049
49
2 -401
24

35. =3*20
60
3 -125
13
68

36. =6^2
16
36
729
5

37. =5*18
64
99
7
90

38. SQRT 2
12
68
27
1.414213562

39. odd + odd =
Even
165
30
55

40. =7*8
252
20
NO
56

41. =5*8
64
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
40
304

42. =3^6
210
66
35
729

43. 125^(1/3)
39
25
5
160

44. =11*19
36
2
162
209

45. =4*14
Side - Side - Side^2
112
102
56

46. =7*19
400
One (1)
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
133

47. =3*11
3
49
133
33

48. =3*6
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
18
153
Rate * Time = Distance (Hint: Draw a chart)

49. =14*15
162
210
120
64

50. 729^(1/3)
360
70
9
1 -000