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387 Gambling thumb thumb thumb thumb thumb
KNOWING WHEN TO QUIT GAMBLING
End any gambling session after winning half of your session's stake. If you start a session with $2,000, quit when you reach $3,000. You may ride out a hot streak; but as soon as you lose one bet, it's time to quit, convert your profits to traveler's checks, and mail them home.
Marvin Karlins Ph.D, author and gambling authority, Psyching Out Vegas
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.4 out of 10 based on 16 reviews
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388 House and Home thumb thumb thumb thumb thumb thumb
KEEPING YOUR ROOF FROM LEAKING
The more bends, gables, and troughs in your roof, the more likely it will leak.
Russell T. Johnson, Temple City, California
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 6.2 out of 10 based on 21 reviews
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389 Exercise thumb thumb thumb thumb thumb thumb
THE RULES OF THREE
You have to exercise at least three times a week. If you leave more than three days between exercise sessions, gains will be cancelled out; and three weeks is about how long it takes your body to adjust to a new level of exercise.
Ned Frederick, writer, Exeter, New Hampshire
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.7 out of 10 based on 19 reviews
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390 Cattle thumb thumb thumb thumb thumb thumb
RUNNING A DAIRY
A good Holstein cow should produce about 5 gallons of milk a day for 305 days a year.
Carol Gallagher, Lexington, Kentucky
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 6.1 out of 10 based on 17 reviews
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391 Precipitation thumb thumb thumb thumb
FORECASTING THE WEATHER
When seagulls fly in imperfect circles, with several turns going in opposite directions, it will rain within 72 hours.
L. Geer, San Diego, California
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 4.1 out of 10 based on 15 reviews
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392 Hiking thumb thumb thumb thumb thumb
ESTIMATING WALKING SPEED
With a 3-foot stride, count the number of steps you take in 2 minutes and divide it by 30. That will give you the speed you're walking in miles per hour.
James V. Vaughter, Carmichael, California
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 4.7 out of 10 based on 18 reviews
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393 Automobiles thumb thumb thumb thumb thumb
WARMING UP YOUR CAR
The time it takes to clean off the windshield is the time it takes to warm up your engine.
Rob Shapiro, flight instructor, Ithaca, New York
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 4.7 out of 10 based on 30 reviews
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394 Boats thumb thumb thumb thumb thumb thumb
DROPPING ANCHOR
Under normal conditions use 7 feet of anchor line for each foot of water. If the water is 10 feet deep, you'll need 70 feet of anchor line.
Peter Kim, San Diego, California
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.6 out of 10 based on 18 reviews
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395 Birds thumb thumb thumb thumb thumb thumb
WATCHING BIRDS
Among birds of prey, females are about one-third larger than males.
Scott Parker, data specialist, Beaumont, Texas
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.5 out of 10 based on 18 reviews
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396 Art thumb thumb thumb thumb thumb
JUDGING MODERN ART
If you like it, it's probably good.
Mack Fraga, Alameda, California
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 4.8 out of 10 based on 40 reviews
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397 Antiques thumb thumb thumb thumb thumb
SELLING COLLECTIBLES
To cover costs and show a profit, try to triple your money on things that sell for less than $5 and double your money on things that sell for more than $5.
Sam Gaben, Indianapolis, Indiana
(LR) Legacy Rule of Thumb from previously published collections
Current Rating: 5.1 out of 10 based on 22 reviews
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