Why is one plus two plus three plus four plus five plus six plus seven plus eight plus nine plus ten equal to 49?

First of all, if the answer is a simple 55, they are all primary school students and will not ask such boring questions here;

Secondly, this topic is written like this. Note: "One plus two plus three ..." Normal math problems are not always expressed in Chinese characters. In mathematics, the effect of 1+2+3 ...+10 is better.

Finally, the question is why one plus two plus three ... equals 49, not whether the cover is equal to 55 or something wrong.

Then, I think this problem can be considered from strokes, but it failed. Five words were added, more than 49. Anyway, it is estimated that it is not from a simple point of view. Maybe I write something else occasionally, or maybe it's a password combination.

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