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28288
There's a W|A widget for antifactorials here.
"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson
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28301
2 + 8 + 3 + 0! - 1 = 13
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28327
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28353
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28379
2 - 8 + 3 + 7 + 9 = 13
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28431
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28457
(( 2 x 8 ) / 4) 5 - 7 = 13
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28483
(-( 2 - 8 )) 4 - 8 - 3 = 13
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28509
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28535
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28561
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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28587
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
 Always satisfy the Prime Directive of getting the right answer above all else.
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