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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. =12*19
228
(x-y)^2
3
Difference in the y-coordinates over the difference in the x coodinates

2. =2^10
8
64
1 -024
It gets smaller

3. =2^2
(x-y)^2
10
168
4

4. =12*15
180
512
234
280

5. What is the difference between a permutation or a combination?

6. Dividing Fractions
512
64
Invert (reciprocal) the second fraction and multiply
729

7. =6*19
13
4
114
255

8. =10^1
54
153
13
10

9. =15^2
160
Won't = 1 - Will
225
256

10. =14*19
98
125
266
10

11. =9*12
108
209
306
48

12. =2^9
208
10
512
10 -000

13. =15*18
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller
240
270
If the number formed by it's last 2 digits is divisible by 4 (3 -028 is because 28 is divisible by 4)

14. =5*15
PEMDAS (parenthesis - Exponents - Multiplication - Division - Addition - Subtraction)
75
8
It gets smaller

15. SQRT 36
13
6
(x-y)^2
1 -024

16. =8^1
Subtract the bottom exponents from the top exponents (3^6 / 3^2 = 3^4)
240
8
112

17. =3*15
320
18
45
44

18. =3^4
63
81
100
196

19. =2^8
117
256
57
9

20. =5*7
512
70
6
35

21. =15*19
90
55
75
285

22. SQRT 100 -000 -000
100 -000
9
8
10 -000

23. =5^1
7
72
The direction of the inequality symbol changes
5

24. =3*10
30
125
Pick the # that occurs most frequently
289

25. =7*13
70
91
9
48

26. =7^3
Move the decimal to the right on both numbers until there is nothing to the right of the decimal
343
36
9

27. =8*17
64
100 -000 -000
136
204

28. =3*17
51
55
3:4:5 -- 5:12:13 -- 7:24:25
A+B (Add both probabilities)

29. SQRT 400
84
20
156
45

30. Permutations: single source - order matters
210
81
64
Multiply the # of choices for each of the spots--but the number of choices keeps getting smaller

31. =6^5
340
125
7 -776
8

32. =2^7
70
270
64
128

33. =17*20
340
209
9
Will = 1 - Won't

34. Problem that asks you to choose a # of items to fill specific spots - when each spot is filled from a different source?
Will = 1 - Won't
Multiply the # of choices for each of the spots
121
16

35. =8*13
260
4
6 -561
104

36. =8*9
126
Subtract the smallest number from the greatest number
72
361

37. =9*13
10 -000 -000
48
143
117

38. =11*15
120
It gets smaller
165
119

39. =8*11
85
30
88
220

40. What happens if you multiply or divide both sides of an inequality by a negative number?
208
128
The direction of the inequality symbol changes
90

41. =5*19
95
156
4
30

42. =7^2
204
49
195
154

43. =12*14
256
132
168
121

44. =10^7
10 -000 -000
8
240
195

45. =8^4
180
4 -096
225
252

46. =5^5
6
3 -125
8
27

47. =8*20
160
It gets smaller
98
81

48. =4^5
1 -024
Odd
16
280

49. If you raise a negative number to an odd power - what happens to the number?
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
It gets smaller
11
100 -000

50. =4^1
2
36
152
4