help formula

  • Thread starter Thread starter xarrisx
  • Start date Start date
X

xarrisx

hello
I need some help with excel

I have this excel sheet

A B
1 11 2
2 0 3
3 5 1
4 2 4
5 ?

I want B5 to be the sum of the multiplication of the colums A and B.
I mean B5=(A1*B1)+(A2*B2)+(A3*B3)+(A4*B4)
I want a ranged version of this formula because i have too many rows and a
formula like the one above will take me a month to write it.

Thanks in advance!
 
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