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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. =6*10
182
60
30
11

2. =7*19
165
Permutations ask for 'arraingements' Combinations ask for 'Groups'
133
1.732050808

3. =5*9
It gets smaller
Multiply both fractions to get a common denominator add or subtract as usual
45
49

4. =13*14
182
108
152
70

5. =8*14
228
112
16
95

6. =17*20
340
140
225
195

7. Basic probability formula?
Number of outcomes you want/total number of possible outcomes
54
27
49

8. =9*18
136
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
162
10 -000

9. =9*10
1 -000 -000
90
100 -000 -000
5

10. =9^1
144
9
10 -000 -000 -000
126

11. Another way to write cube root 5
121
49
5^(1/3)
4

12. SQRT 729
78
27
1.732050808
46 -656

13. =4*11
33
44
221
216

14. =2^1
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
49
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
2

15. =4^6
323
4 -096
256
54

16. =16*18
18
288
12
100 -000 -000

17. =4*7
28
90
1 -296
81

18. SQRT 10 -000
100
216
2
49

19. =20*20
25
400
5^(1/3)
27

20. =9^2
81
121
9
Amount of increase/original amount = x/100 (Then cross multiply to find x)

21. Any number to the negative power (y) is equal to?
2
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
380
44

22. Adding and Subtracting Decimals
Line up the decimal points and proceed as usual
1 -000 -000 -000
100 -000
3 -125

23. =7^1
6
60
7
5

24. =7*11
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)
77
380
54

25. =8^3
135
144
512
153

26. =6*11
180
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
66
54

27. =5^1
7
100
247
5

28. Odds that at least one thing will happen?

29. =13*15
121
195
x:x^(1/3):2x
20

30. Probability that A or B will happen?
Line up the decimal points and proceed as usual
52
A+B (Add both probabilities)
6

31. =9*17
729
512
216
153

32. =4*17
49
216
68
156

33. =3*13
221
39
2pr
16

34. =8*13
104
7
125
144

35. Adding or subtracting fractions with different denominators
512
Multiply both fractions to get a common denominator add or subtract as usual
6
(x-y)^2

36. =11*16
176
187
30
196

37. =8*8
51
2
Subtract the smallest number from the greatest number
64

38. =15*17
One (1)
255
121
140

39. =15*19
285
Even
132
The direction of the inequality symbol changes

40. =8^3
512
Add or subtract the numbers on top and keep the same denominator
Won't = 1 - Will
9

41. =12*12
(b*h)/2
165
Add their exponents (6^2 *6^3 = 6^5)
144

42. SQRT 100
10
1 -024
9
136

43. =5^4
625
24
221
512

44. 4/0 =
45
13
Undefined
Difference in the y-coordinates over the difference in the x coodinates

45. =11*18
198
280
8
64

46. =4^3
80
36
140
64

47. 0/1 =
8
81
64
0 (any fraction with 0 on top is 0)

48. =7*7
33
Amount of increase/original amount = x/100 (Then cross multiply to find x)
64
49

49. =17*19
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
100 -000
6 -561
323

50. =4^4
88
9
256
125