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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. =18*18
4 -096
A+B (Add both probabilities)
324
100

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

3. =19*19
90
361
Odd
256

4. =11*15
512
176
165
320

5. =3^1
3
112
4
5

6. Odds that something doesn't happen?

7. When is a number divisible by 3?
Base * Height
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)
224
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)

8. =7*17
119
77
Difference in the y-coordinates over the difference in the x coodinates
36

9. =4*17
68
70
112
25

10. SQRT 625
380
224
16
25

11. =7*19
6
234
Start with the number of permutations - that is the numerator(top). The Denominator is the number of combinations (eg 432*1)
133

12. =12*12
1 -000
Even
If the sum of its can be divided evenly by 3 (216 - is because 2+1+6 is divisible by 3)
144

13. =13*15
(x-y)^2
68
195
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

14. =4*15
Pr^2
60
33
729

15. =5*12
18
20
60
204

16. =9*16
5^(1/3)
Even
144
64

17. Adding and Subtracting Decimals
76
Line up the decimal points and proceed as usual
y=mx+b where b is the y-intercept (the point which crosses the y-axis) m is the slope of the line - and x & y are the coordinates of some point on that line
(x-y)^2

18. =15*15
66
119
112
225

19. =6*16
300
96
3:4:5 -- 5:12:13 -- 7:24:25
5

20. =20^2
3
400
2
1 -024

21. =7^1
7
400
112
NO

22. =6^6
91
Multiply the # of choices for each of the spots
x:x^(1/3):2x
46 -656

23. =8*18
A*B (Multiply both probabilities)
121
729
144

24. =3*13
112
112
25
39

25. =5^3
125
12
Even
8

26. =6*12
160
72
1 -000
Arrainge #s from least to greatest and take the middle number or the average of the two middle #s

27. =9*13
95
360
117
234

28. =5^4
625
252
2
Ignor decimal points and multiply the two numbers - then count the digits to the right of the decimal points in the original numbers and place the decimal so there are the same number of digits to the right of the decimal

29. Probability that A and B will both happen?
A*B (Multiply both probabilities)
1 -024
192
Ignor decimal points and multiply the two numbers - then count the digits to the right of the decimal points in the original numbers and place the decimal so there are the same number of digits to the right of the decimal

30. =14*19
266
It becomes positive
48
49

31. Area of a parallelogram?
6
Base * Height
729
48

32. =4*13
100
52
400
729

33. When is a number divisible by 4?

34. =2^3
8
10 -000
238
y=mx+b where b is the y-intercept (the point which crosses the y-axis) m is the slope of the line - and x & y are the coordinates of some point on that line

35. =9^5
400
126
1 -024
59 -049

36. =3*18
46 -656
54
64
70

37. If you raise a positive fraction that is less than 1 to a power - what happens to the fraction?
1.414213562
Add or subtract the numbers on top and keep the same denominator
30
It gets smaller

38. =3^3
2
27
A+B (Add both probabilities)
100

39. Right Isosceles triangle (lengths)?
Side - Side - Side^2
272
243
25

40. =8^3
238
6 -561
512
30

41. When is a number divisible by 6?
x:x^(1/3):2x
8
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)
4

42. Any number to the first power is?
2
300
Itself
78

43. =18*19
4
36
16
342

44. =2^2
108
4
3
x:x^(1/3):2x

45. =9*11
90
45
16
99

46. =1^3
NO
50
225
1

47. odd + odd =
84
Even
50
112

48. 729^(1/3)
288
72
Base * Height
9

49. =5*18
90
176
81
48

50. =17*19
64
24
102
323