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The Main Rules Collection (5130)
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1450
Marriage
STAYING MARRIED
The chances of divorce are greatest during the fourth year of marriage.
Anonymous
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
3.7
out of
10
based on
24
reviews
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1706
Money
CALCULATING THE INFLATION RATE
Each 10 percent drop in the dollar's value adds 1.5 percent to the inflation rate. Each 10 percent drop in oil's value subtracts 1 percent from the inflation rate.
Norman Brenner, Fleetwood, New York
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
4.5
out of
10
based on
14
reviews
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1962
Sports
WINNING A GAME
If you do exceptionally well in a game of bowling or a round of golf, your next game or your next round will be exceptionally bad.
George Mackie, Nokomis, Florida
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
4.4
out of
10
based on
17
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2218
Relationships
SEX IN THE CLASSROOM
A computer science class will be about one-third female. A math class will be about one-tenth female.
Janet Blumer, math grad student, Denver, Colorado
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
6.0
out of
10
based on
23
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2474
Shellfish
ESTIMATING THE AGE OF A LOBSTER
Estimate the age of a large lobster by multiplying its weight, in pounds, by seven.
Scott Parker, data specialist, Beaumont, Texas
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
4.5
out of
10
based on
14
reviews
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2986
Carpentry
LUMBER MEASUREMENTS
The actual measurements of lumber don't match the spoken size (A 2x4 isn't actually 2 inches by 4 inches, its 1.5"x3.5") Up to 2 inches, the actual measurements are less by a quarter inch (1/4"), from 2"-8", they're less by half an inch, and above 8", less by three-quarters.
Christopher
(4)
Contributions from this contributor since (2008-01-08)
Current Rating:
6.7
out of
10
based on
20
reviews
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3754
Eyes
CONTACT LENSES AND ASTIGMATISM
A standard spheric soft contact lens will correct astigmatism up to one diopter and
réplique montres
is much cheaper than a toric one.
Oscar, Consultant, Argentina
(7)
Contributions from this contributor since (2008-02-07)
Current Rating:
6.6
out of
10
based on
13
reviews
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4010
Management
THE TRASH RESEPTACLE RULE
In general, people will not walk more than 14 or 15 steps to throw away a piece of
Rolex Daydate réplique montre
, so place trash cans at most every 25 paces (so that people always find they're within 13 steps of a receptacle).
Craig, University professor
(4)
Contributions from this contributor since (2008-04-11)
Current Rating:
8.1
out of
10
based on
17
reviews
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171
Gambling
PLAYING POKER
Out of ten opening hands, half will be no good, four will contain a pair, and one will beat a pair.
Anonymous
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
4.7
out of
10
based on
18
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427
Electricity
DESIGNING AN ELECTRIC MOTOR
The higher the frequency, the smaller the size of the motor. A motor designed to run on 400Hz alternating current is about one-fourth the size of a motor designed for 60 Hz.
Scott Parker, data specialist, Beaumont, Texas
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
4.2
out of
10
based on
15
reviews
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683
Animals
DODGING A POLAR BEAR
If a polar bear charges you, dodge to the right. Eskimos say most polar bears are left-pawed.
L.M. Boyd, The San Francisco Chronicle
(LR)
Legacy Rule of Thumb from previously published collections
Current Rating:
5.2
out of
10
based on
46
reviews
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