Find sum of terms of this finite arthm. series

3+4.5+6+7.5 + ... 99

Is this correct?

The initial term is 3 and each number increases by 1.5...so

S(65) = 1.5(3 + 65)*65/2

S(65) = 1.5(68)*65/2

S(65) = 1.5*65*34

3,315

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- April 13th 2009, 06:55 PMrelytfinite arithmetic series sum
Find sum of terms of this finite arthm. series

3+4.5+6+7.5 + ... 99

Is this correct?

The initial term is 3 and each number increases by 1.5...so

S(65) = 1.5(3 + 65)*65/2

S(65) = 1.5(68)*65/2

S(65) = 1.5*65*34

3,315 - April 13th 2009, 07:13 PMK A D C Dilshan
yeah correct .

Why do you think there is a problem ? - April 13th 2009, 07:20 PMrelyt
I didn't. I just wanted to make sure i had it down. I was just reading the chapters.