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3 years ago

What is the sum of the sequence 46+47+48+49+...+115

Mathematics

2 answers:

Dmitry [639]3 years ago

6 0

46+(n-1)1=115

46+n-1*1=115

46+n-1=115

n+45=115

n=70

Plug back into equation to check.

46+(70-1)1=115

46+69=115

nalin [4]3 years ago

3 0

46+47+48+49+115= 305

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