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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. =5^4
625
28
45
306

2. =16*19
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
51
304
108

3. =6*11
224
66
64
35

4. Combinations: single source - order doesn't matter
96
153
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
80

5. =12*16
Number of outcomes you want/total number of possible outcomes
(x-y)^2
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)
192

6. =11*20
126
220
45
90

7. 64^(1/3)
4
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
85
285

8. =5*11
136
32
55
3:4:5 -- 5:12:13 -- 7:24:25

9. =3^2
Number of outcomes you want/total number of possible outcomes
36
90
9

10. =4^3
48
64
266
208

11. =3*20
343
625
60
13

12. =5*13
9
65
NO
Pr^2

13. =9*19
10 -000 -000
91
171
625

14. SQRT 400
20
56
4 -096
66

15. =9^5
25
59 -049
168
60

16. =4^3
70
98
81
64

17. =9^3
36
Invert (reciprocal) the second fraction and multiply
729
NO

18. =11*12
60
88
132
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

19. =4*5
117
25
1 -000 -000
20

20. SQRT 1 -000 -000
400
60
1 -000
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken

21. =5^2
9
260
27
25

22. =2^8
27
54
Undefined
256

23. =6*8
48
Number of outcomes you want/total number of possible outcomes
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
64

24. =5^5
5
216
3 -125
35

25. =13*18
Undefined
216
Even
234

26. SQRT 169
0 (any fraction with 0 on top is 0)
Multiply the numerators and put the product over the product of the denominators
57
13

27. =7*8
Pick the # that occurs most frequently
2
64
56

28. =3*10
112
240
30
108

29. Dividing Decimals
45
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
18
117

30. =5*6
4
55
30
285

31. =3*4
Even
12
121
243

32. =4*20
32
80
340
1 -296

33. =4*17
160
25
68
54

34. =8*10
80
228
165
100

35. =9*10
90
400
49
100 -000

36. =18*20
10
NO
360
20

37. SQRT 9
12
39
3
68

38. Area of a triangle?
(b*h)/2
10
Permutations ask for 'arraingements' Combinations ask for 'Groups'
154

39. =4*9
98
16
36
512

40. =18*19
625
117
144
342

41. =5*16
243
60
13
80

42. =11*19
1
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
64
209

43. =5^3
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
It gets smaller
125
77

44. =7^4
198
180
10
2 -401

45. SQRT 100
54
20
144
10

46. =14*20
20
120
98
280

47. =9*18
80
260
162
60

48. =8*12
6
9
56
96

49. =6^6
Multiply the # of choices for each of the spots
46 -656
32
9

50. =2^4
5
260
112
16