Yahoo Answers: Answers and Comments for Please help, what is the exact number before 8 inches? [Mathematics]
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From Dainty
enUS
Sat, 15 Jun 2019 03:46:18 +0000
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Yahoo Answers: Answers and Comments for Please help, what is the exact number before 8 inches? [Mathematics]
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From nbsale: There is no "next" number or number ...
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Sat, 15 Jun 2019 06:08:32 +0000
There is no "next" number or number "just before."
The real numbers are "dense." Between any two different real numbers, there is another real number (in fact, an infinite number).
If you are looking at a ruler, the mark just before 8 inches is usually 7 15/16. Some rulers have finer markings than that, so it could be 7 31/32 or even 7 63/64, but only workers like machinists use rulers that finely graduated.

From G. Whilikers: The set of "real numbers" between 7 ...
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Sat, 15 Jun 2019 04:50:35 +0000
The set of "real numbers" between 7 and 8 is infinite, and for any such number you may choose, there is another that is greater than that but still less than 8.

From Jim Moor: 7 is the whole counting number (integer) befor...
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Sat, 15 Jun 2019 05:23:33 +0000
7 is the whole counting number (integer) before 8.
There are infinite values (Real Numbers) between 7 & 8

From Puzzling: There is no exact number before 8 inches since...
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Sat, 15 Jun 2019 16:10:28 +0000
There is no exact number before 8 inches since the numbers are continuous, but I think you are asking what is the exact value of the *marking* just before 8 inches.
Obviously that depends on the markings on your ruler.
Some rulers might only be marked to the nearest 1/4 inch. So the mark before would be 7 3/4.
Others might be marked to the nearest 1/8 inch. So the mark before would be 7 7/8.
If it's the nearest 1/16 inch, then the value before is 7 15/16.
And if it's to the nearest 1/32 inch, then the value before is 7 31/32.
For all practical purposes, that's usually the smallest unit (though you can see it could continue on to 7 63/64, 7 127/128, etc.)
Basically take 8 inches and subtract one unit of marking on the ruler. For example, on a ruler with 1/32 markings:
8  1/32
= 7 31/32

From Philomel: 7 63/64 is as close as you will get on a ruler...
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Sat, 15 Jun 2019 16:38:32 +0000
7 63/64 is as close as you will get on a ruler. I don't there are any rulers marked any finer than 64ths.

From busterwasmycat: Whatever number you choose, I will choose some...
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Sat, 15 Jun 2019 14:02:36 +0000
Whatever number you choose, I will choose something closer. There isn't one until you define the unit of measurement scale. There is a limit to how small you can tell and that is what defines the next number down from your target. It is one unit less.
What unit of measurement are you dealing with? That is what decides, the measuring device declares how small you can measure. Rulers tend to use 16ths or 32nds as the smallest split possible, although kiddie rulers are often only divided into 8ths.

From ted s: define " exact number " ....there is...
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Sat, 15 Jun 2019 04:25:34 +0000
define " exact number " ....there is no number immediately before 8

From JSG: What Jim Moor said.
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Mon, 17 Jun 2019 17:51:56 +0000
What Jim Moor said.

From drrckyee: 7 and 3/4 of an inches.
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Sat, 15 Jun 2019 22:42:13 +0000
7 and 3/4 of an inches.

From cosmo: 8  epsilon inches, where epsilon = 1/infinity
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Sat, 15 Jun 2019 22:18:36 +0000
8  epsilon inches, where epsilon = 1/infinity

From Anonymous: Not sure if there is one
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Sat, 15 Jun 2019 14:58:22 +0000
Not sure if there is one

From Como: 
7¾ could be such a number.
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Sat, 15 Jun 2019 08:50:15 +0000

7¾ could be such a number.

From geezer: 7.99999999999999999999999999999999999999999999...
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Sat, 15 Jun 2019 05:53:49 +0000
7.9999999999999999999999999999999999999999999999999999.. inches
@ your comment Puzzling
No .. it's not EXACTLY EQUAL .. 8 is 8 .. 7.999whatever isn't.
Notice how one starts with an 8 and the other one doesn't ?
If 7.9 isn't 8 and 7.9999999etc is 8 .. How many .9's does it take ?

From USAFisnumber1: 7.99999999999999999999999999999999999999999999...
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Sat, 15 Jun 2019 05:37:37 +0000
7.99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 to infinity.