anonymous
  • anonymous
1+2+3+...+49+50=
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
s=n(n+1)/2
anonymous
  • anonymous
50.51/2=25.51
anonymous
  • anonymous
\[\sum_{k=1}^{n}k=\frac{n(n+1)}{2} \implies \sum_{k=1}^{50}=\frac{50(51)}{2}=1275\]

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anonymous
  • anonymous
don't you think it's much much easier to be solved
anonymous
  • anonymous
ya.........
anonymous
  • anonymous
....No? That is the easiest way to solve it? lol
anonymous
  • anonymous
We can do this by two methods: 1.The Formula Method(malevolence has already done it) 2.The Gaussian Pairing Tool : 50+1=51,49+2=51......therefore 1+2+.......+49+50 = 51*50/2 = 1275
anonymous
  • anonymous
You could just add them up but you'll get the same number...
anonymous
  • anonymous
lol
anonymous
  • anonymous
i mean just solve it not writing the formula
anonymous
  • anonymous
dnt complicate it aron
anonymous
  • anonymous
The "Gaussian Pairing Tool" is the formula...
anonymous
  • anonymous
Its just generalized to n things being added...I just wanted to show you where it came from...Type it into wolfram if you just want the number.
wasiqss
  • wasiqss
we can also use programing :D
anonymous
  • anonymous
lol
anonymous
  • anonymous
no dont....
wasiqss
  • wasiqss
w8 lemme make it :D
anonymous
  • anonymous
can u teach me about addition of harmonic mean
anonymous
  • anonymous
hey let's pass it . this question doesn't worth to discuss on
wasiqss
  • wasiqss
tanu did that in high school bt may b i will revise on tuesday and then teach u ok
anonymous
  • anonymous
it's for elementry school
anonymous
  • anonymous
malevolence ur good
wasiqss
  • wasiqss
1 Attachment
wasiqss
  • wasiqss
a program that calculates sum of arithematic series with difference =1

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