Interview Math Flashcards

1
Q

1/3

A

33.3%

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2
Q

1/4

A

25%

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3
Q

1/5

A

20%

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4
Q

1/6

A

16.6%

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5
Q

1/7

A

14.28% = ~14%

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6
Q

1/8

A

12.5%

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7
Q

1/9

A

11.1%

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8
Q

1/10

A

10%

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9
Q

1/11

A

9%

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10
Q

1/12

A

8.3%

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11
Q

1/16

A

6.25%

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12
Q

1/32

A

3.125%

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13
Q

Rule of 72

A

Approximates how long it will take for an investment to double. To use this rule, divide 72 by the annual rate of return.

Ex. if the rate of return is 2%, it would take 36 years for an investment to double

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14
Q

Rate of return is 3%

Est. # of years too double an investment?

A

24 years

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15
Q

Rate of return is 5%

Est. # of years too double an investment?

A

15 years

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16
Q

Rate of return is 7%

Est. # of years too double an investment?

A

10.3 years

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17
Q

Rate of return is 9%

Est. # of years too double an investment?

A

8 years

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18
Q

Rate of return is 12%

Est. # of years too double an investment?

A

6 years

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19
Q

Rate of return is 25%

Est. # of years too double an investment?

A

2.9 years ~ 3 years

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20
Q

Rate of return is 50%

Est. # of years too double an investment?

A

1.4 years

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21
Q

Rate of return is 72%

Est. # of years too double an investment?

A

1 year

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22
Q

Rate of return is 100%

Est. # of years too double an investment?

A

0.7 years

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23
Q

How many millions in a billion?

A

1,000

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24
Q

How many thousands in a million?

A

1,000

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25
Q

How many billions in a trillion?

A

1,000

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26
Q

How many millions in a trillion?

A

1,000,000

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27
Q

How many thousands in a billion?

A

1,000,000

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28
Q

9 x 13

A

117

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29
Q

9 x 14

A

126

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30
Q

9 x 15

A

135

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31
Q

9 x 16

A

144

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32
Q

9 x 17

A

153

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33
Q

9 x 18

A

162

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34
Q

9 x 19

A

171

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35
Q

9 x 20

A

180

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36
Q

8 x 13

A

104

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37
Q

8 x 14

A

112

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38
Q

8 x 15

A

120

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39
Q

8 x 16

A

128

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40
Q

8 x 17

A

136

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41
Q

8 x 18

A

144

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42
Q

8 x 19

A

152

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43
Q

8 x 20

44
Q

7 x 13

45
Q

7 x 14

46
Q

7 x 15

47
Q

7 x 16

48
Q

7 x 17

49
Q

7 x 18

50
Q

7 x 19

51
Q

7 x 20

52
Q

6 x 13

53
Q

6 x 14

54
Q

6 x 15

55
Q

6 x 16

56
Q

6 x 17

57
Q

6 x 18

58
Q

6 x 19

59
Q

6 x 20

60
Q

5 x 13

61
Q

5 x 14

62
Q

5 x 15

63
Q

5 x 16

64
Q

5 x 17

65
Q

5 x 18

66
Q

5 x 19

67
Q

4 x 13

68
Q

4 x 14

69
Q

4 x 15

70
Q

4 x 16

71
Q

4 x 17

72
Q

4 x 18

73
Q

4 x 19

74
Q

3 x 13

75
Q

3 x 14

76
Q

3 x 15

77
Q

3 x 16

78
Q

3 x 17

79
Q

3 x 18

80
Q

3 x 19

81
Q

2 x 13

82
Q

11 x 12

83
Q

12 x 13

84
Q

30 M * 500

85
Q

40% / 3%

86
Q

8K * 90

87
Q

300K / 6%

88
Q

20% * 80

89
Q

9 / 600

90
Q

800 M * 9%

91
Q

2M * 600

92
Q

7M / 100

93
Q

3% * 9B

94
Q

20M * 7

95
Q

60/40

96
Q

40% * 9B

97
Q

200/300

98
Q

7% of 20%

99
Q

90M * 90

100
Q

200K / 100

101
Q

9 * 80M

102
Q

20 * 70M

103
Q

50 M / 6K

104
Q

3k / 40 k

105
Q

2M * 5K

106
Q

200M / 900