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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. =7^2
360
64
49
729

2. =6*8
15
7 -776
100
48

3. =15*16
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
2 -401
85
240

4. SQRT 3
216
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
70
1.732050808

5. =4*13
196
100
119
52

6. =8^3
140
729
1 -000
512

7. =3*17
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
A+B (Add both probabilities)
9
51

8. SQRT 64
(x-y)^2
2pr
96
8

9. =6*11
16
208
66
225

10. Pythagorean Triples (lengths)?
100
3:4:5 -- 5:12:13 -- 7:24:25
10
256

11. =10^3
Rate * Time = Distance (Hint: Draw a chart)
48
169
1 -000

12. =3*5
15
12
57
120

13. even + odd =
108
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
Odd
8

14. =3^3
27
168
Will = 1 - Won't
121

15. Probability that A or B will happen?
144
323
49
A+B (Add both probabilities)

16. SQRT 1 -024
Even
32
225
Won't = 1 - Will

17. Circumference of a circle?
247
221
Will = 1 - Won't
2pr

18. =7*11
60
7 -776
77
48

19. =16*20
225
320
81
It gets smaller

20. =8*18
343
10 -000
Even
144

21. =6^3
16
216
15
168

22. =4*14
56
Itself
9
49

23. =4^1
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
5
162
4

24. =6*16
36
96
(b*h)/2
100

25. Area of a triangle?
216
(b*h)/2
120
A+B (Add both probabilities)

26. =5*11
55
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
96
165

27. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
121
7
It gets smaller
Undefined

28. =9*16
80
Pick the # that occurs most frequently
324
144

29. =7^3
343
The direction of the inequality symbol changes
114
Pick the # that occurs most frequently

30. =9^3
Combinations don't care about the order of the problems
A+B (Add both probabilities)
729
42

31. =4^2
(x-y)^2
16
98
243

32. =13*16
208
59 -049
5
80

33. =3^1
68
3
221
300

34. When is a number divisible by 3?
7
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
1 -000

35. Does x^6 - x^2 = x^4?
266
255
NO
Even

36. =3*16
48
68
2
729

37. =16*18
288
171
126
56

38. =17*18
162
306
Odd
1.414213562

39. Exponents - Dividing numbers with same base
20
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
280
90

40. =4*5
125
20
196
16

41. =19*19
361
1 -296
18
99

42. =5^2
204
81
60
25

43. =8*8
9
360
52
64

44. Combinations: single source - order doesn't matter
187
It gets smaller
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
2

45. SQRT 169
80
13
55
136

46. =4^4
256
252
Odd
126

47. =3*12
36
39
15
44

48. =6^5
7 -776
81
Pr^2
3

49. =4*10
238
40
9
225

50. =4*8
Pick the # that occurs most frequently
32
36
90