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Divina543 Divina543
  • 18-03-2014
  • Mathematics
Answered

What is the average (arithmetic mean) of all the multiples of ten from 10 to 190 inclusive?

Verified Answer :

Anonymous Anonymous
  • 19-03-2014

You've got 19 numbers. Their sum is 10(1+2+3+...+19) or \(10*\frac{20*19}{2}\). Divide that by 19, to get \(\frac{10*20}{2}=100\)

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