RE: Arithmetic sums
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I remember formulas like these back in middle school.
They definitely made some calculations easier.
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You are viewing a single comment's thread:
I remember formulas like these back in middle school.
They definitely made some calculations easier.
Yeah this is maths that many of us learnt at school, but surprising very useful to know. Imagine how long it would take to add up the first 100 numbers, instead you just go 101*50 = 5050. It takes like 5 seconds.
Praise the people that figured that out.