+

The last item) x number of items

/2 Mathematical expression: 1+2+3+4+...+

n

=

(n+ 1)n

/2

Other formulas:

1. Last item = first item+(number of items-1)* tolerance.

2. Number of projects = (last project-first project)/tolerance+1

3. The first project = the last project-(project number-1)* tolerance

Johann Carl Friedrich Gauss (John

Carl

Friedrich

Gauss

,1April 30, 777-1February 23, 855) A famous German mathematician, physicist, astronomer and geodesist. As one of the founders of modern mathematics, Gauss is regarded as one of the most important mathematicians in history and is known as the "prince of mathematics".

Gauss ranks alongside Archimedes and Newton as the three greatest mathematicians in the world. He made great achievements in his life, with 1 10 achievements named after his name "Gauss", which is the highest among mathematicians. He made contributions to number theory, algebra, statistics, analysis, differential geometry, geodesy, geophysics, mechanics, electrostatics, astronomy, matrix theory and optics.

References:

Baidu Encyclopedia-Gaussian sum