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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. =8*8
240
240
45
64

2. =9*11
108
99
90
100 -000 -000

3. =9^2
2pr
Permutations ask for 'arraingements' Combinations ask for 'Groups'
81
27

4. =4*11
44
160
A*B (Multiply both probabilities)
216

5. =5*7
48
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
35
3:4:5 -- 5:12:13 -- 7:24:25

6. =4*16
90
64
9
40

7. =4*18
x:x^(1/3):2x
76
72
49

8. =15*18
NO
36
270
90

9. =6^4
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
44
1 -296
256

10. =3*20
400
60
90
72

11. 0/1 =
96
42
84
0 (any fraction with 0 on top is 0)

12. =13*15
225
195
54
729

13. =3^5
64
5
243
Amount of increase/original amount = x/100 (Then cross multiply to find x)

14. =18*19
342
42
20
266

15. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
360
5
208
It gets smaller

16. =20^2
343
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
6
400

17. SQRT 625
105
25
135
216

18. =7^4
48
56
NO
2 -401

19. =6*16
3 -125
91
96
9

20. =1^3
255
1
35
7

21. =3^4
400
81
128
10 -000 -000

22. Area of a parallelogram?
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
Base * Height
400
4 -096

23. 125^(1/3)
33
36
90
5

24. =6*6
0 (any fraction with 0 on top is 0)
78
81
36

25. =13*19
Amount of increase/original amount = x/100 (Then cross multiply to find x)
247
209
4

26. =7*11
512
77
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
Add their exponents (6^2 *6^3 = 6^5)

27. Pythagorean Triples (lengths)?
Combinations don't care about the order of the problems
108
3:4:5 -- 5:12:13 -- 7:24:25
42

28. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
2pr
Multiply the # of choices for each of the spots
13
238

29. =5^1
6 -561
91
49
5

30. Multiplying Fractions
Add their exponents (6^2 *6^3 = 6^5)
108
Multiply the numerators and put the product over the product of the denominators
144

31. When is a number divisible by 6?
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)
NO
160
165

32. =4*5
27
20
80
11

33. =6*9
88
120
54
It gets smaller

34. =5*17
100
133
81
85

35. =18*18
54
Combinations don't care about the order of the problems
171
324

36. When is a number divisible by 4?

37. Order of operations
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
32
1.414213562
32

38. =16*18
18
144
57
288

39. =5^3
56
125
256
128

40. SQRT 4
180
Multiply both fractions to get a common denominator add or subtract as usual
(x-y)^2
2

41. =7*19
100 -000 -000
133
72
24

42. 343^(1/3)
7
Even
6
Side - Side - Side^2

43. =13*18
20
25
Subtract the smallest number from the greatest number
234

44. =4*8
It becomes positive
8
60
32

45. =4*9
36
63
Permutations ask for 'arraingements' Combinations ask for 'Groups'
64

46. When is a number divisible by 4?

47. =4*14
70
56
100 -000 -000
198

48. =10^3
54
36
1 -000
304

49. =12*19
Even
60
228
270

50. =4*6
24
221
240
25