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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. SQRT 1 -024
0 (any fraction with 0 on top is 0)
84
4
32

2. 4/0 =
36
A+B (Add both probabilities)
Undefined
It becomes positive

3. =5^2
3
60
25
120

4. =13*15
Pr^2
36
195
255

5. SQRT 729
27
5
121
18

6. =14*16
162
304
24
224

7. SQRT 3
1.732050808
10 -000
252
27

8. =3*10
323
1.732050808
30
64

9. =3*17
51
10
68
7 -776

10. Permutations: single source - order matters BUT only for a selection
2
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
165
729

11. If you raise a negative number to an odd power - what happens to the number?
300
4
It gets smaller
15

12. SQRT 1 -000 -000
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s
10
1 -000
3:4:5 -- 5:12:13 -- 7:24:25

13. Does (x^2 + y^2 + z^2)/(x^2 + y^2) = z^2?
64
2 -401
NO
216

14. =15*19
285
Side - Side - Side^2
68
Add their exponents (6^2 *6^3 = 6^5)

15. 64^(1/3)
7
160
4
10 -000

16. =12*19
243
56
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
228

17. =12*17
125
x:x^(1/3):2x
266
204

18. =9^1
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
144
187
9

19. =7*16
64
Multiply the exponents (4^3)^2 = 4^(3*2) = 4^6
Undefined
112

20. =5^4
Difference in the y-coordinates over the difference in the x coodinates
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
625
13

21. =14*14
196
91
60
252

22. =6*6
49
95
36
9

23. =3*4
12
68
77
119

24. =4^3
5^(1/3)
8
64
Itself

25. odd + odd =
5^(1/3)
Even
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
176

26. How do you find the slope of a line?
Difference in the y-coordinates over the difference in the x coodinates
133
228
64

27. =18*20
240
176
360
96

28. =11*14
1 -000 -000
42
104
154

29. =16*17
Odd
2pr
220
272

30. =14*19
135
272
266
It becomes positive

31. =4*12
56
234
48
Permutations ask for 'arraingements' Combinations ask for 'Groups'

32. =7*17
119
6
1 -000
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)

33. SQRT 6 -561
75
81
285
132

34. =7*12
240
Even
Difference in the y-coordinates over the difference in the x coodinates
84

35. =3*20
60
729
96
84

36. Multiplying Fractions
8
361
Multiply the numerators and put the product over the product of the denominators
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

37. =8*13
13
104
Add or subtract the numbers on top and keep the same denominator
Permutations ask for 'arraingements' Combinations ask for 'Groups'

38. =12*15
36
512
180
270

39. =4^5
153
18
1 -024
Odd

40. =7^3
4
343
225
228

41. =8*20
160
20
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
Line up the decimal points and proceed as usual

42. SQRT 169
It becomes positive
13
380
105

43. =4*18
3
238
72
Itself

44. =8^2
Side - Side - Side^2
1 -000
Amount of increase/original amount = x/100 (Then cross multiply to find x)
64

45. =12*12
144
Rate * Time = Distance (Hint: Draw a chart)
6 -561
54

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

47. When is a number divisible by 6?
343
77
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)
204

48. =8*14
400
272
Side - Side - Side^2
112

49. =5*19
400
238
95
156

50. =6^3
209
180
10 -000
216