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lions [1.4K]
1 year ago
11

I'm lazy and dont feel like doing math myself. So pls help me!

Mathematics
1 answer:
s2008m [1.1K]1 year ago
8 0

Answer:

55

Step-by-step explanation:

Well you just plug in 10 as n.. and you get the equation:

\frac{10(10+1)}{2} \\\frac{10(11)}{2}\\\\\frac{110}{2}\\\\55

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