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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. How do you find the mode of a set of numbers?
180
90
5
Pick the # that occurs most frequently

2. =5*17
64
80
85
4

3. =6*10
208
104
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
60

4. =3*17
51
320
90
4

5. SQRT 100 -000 -000
10 -000
220
2
238

6. =6^6
10 -000
48
220
46 -656

7. =11*15
42
165
Difference in the y-coordinates over the difference in the x coodinates
1 -000 -000 -000

8. =3*20
120
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
72
60

9. =4*13
52
4
36
343

10. =25^2
64
625
80
85

11. SQRT 121
76
11
50
36

12. When is a number divisible by 6?
252
84
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)

13. =9^4
169
36
6 -561
63

14. Any number to the negative power (y) is equal to?
60
The reciprocal of the same number to the positive power (y). (eg 3^-2 = 1/(3^2) = 1/9)
144
16

15. =9*20
28
180
30
72

16. Permutations: single source - order matters BUT only for a selection
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller - stop when all the places are taken
255
1.414213562
76

17. =3*16
210
Odd
Multiply the numerators and put the product over the product of the denominators
48

18. Adding and Subtracting Decimals
Line up the decimal points and proceed as usual
64
20
256

19. =7*18
45
126
204
120

20. =15*18
270
6 -561
99
2

21. 343^(1/3)
90
Subtract the smallest number from the greatest number
10 -000 -000 -000
7

22. =4*19
76
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)
360
3

23. =4*6
288
13
24
1.414213562

24. =5*19
4
225
95
8

25. =7^1
16
7
8
117

26. =6*16
96
45
32
85

27. =15*19
45
256
285
72

28. =14*20
68
60
One (1)
280

29. Area of a triangle?
1 -024
Odd
(b*h)/2
234

30. Probability that A or B will happen?
240
144
11
A+B (Add both probabilities)

31. =13*19
247
512
56
119

32. Another way to write cube root 5
140
45
5^(1/3)
20

33. =9^5
162
10 -000 -000
59 -049
216

34. =16*19
304
5
One (1)
380

35. =4*4
Add or subtract the numbers on top and keep the same denominator
16
3:4:5 -- 5:12:13 -- 7:24:25
11

36. What happens if you multiply or divide both sides of an inequality by a negative number?
135
It becomes positive
The direction of the inequality symbol changes
Even

37. =4^5
5
3
Line up the decimal points and proceed as usual
1 -024

38. SQRT 10 -000 -000 -000
100 -000
5
7
95

39. =9*12
108
84
210
512

40. =2^8
280
45
2
256

41. =7*10
Even
70
64
Rate * Time = Distance (Hint: Draw a chart)

42. even x odd =
Even
3
2
4

43. =10^3
46 -656
1 -000
85
360

44. =7*11
225
77
180
0 (any fraction with 0 on top is 0)

45. =3^1
3
16
6
156

46. =3^2
4
45
9
182

47. =4*17
35
68
729
198

48. 216^(1/3)
6
51
5
10 -000 -000

49. =6*12
77
72
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
144

50. =9*18
162
9
126
120