I found an answer from www.quora.com

What is 1+1? - Quora

There is a great old accountancy joke that answers this question: 'what do you need it to be?' However, it gets at my favourite Truth about a Mathematics - the ...

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I found an answer from www.quora.com

If 1 = 1, then what is 1? - Quora

The Bellmen proceeds to hand the oldest brother 5 one dollar bills. The three brothers look at each other and the 5 ones and decide to take back one dollar each ...

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I found an answer from puzzling.stackexchange.com

riddle - When does 1+1=3? - Puzzling Stack Exchange

The following slightly abuses the notion of "equals" but in a way that is common among non-mathematicians (more or less "And the next thing ...

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I found an answer from en.wikipedia.org

List of scale model sizes - Wikipedia

This is a list of scale model sizes, listing a variety of size ratios for scale models. Model scales[edit]. Ratio, Inches per foot, Millimetres per foot, Comments. 1: ...

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I found an answer from en.wikipedia.org

1+1 - Wikipedia

1 is a mathematical expression that evaluates to: 2 (number) (in ordinary arithmetic); 1 (number) 0 (number) (in Boolean algebra with a notation where '+' denotes ...

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An equation that makes the number 2 by having 2 ones and a addition sign