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What is the sum of the series?

 

What is the sum of the series?

What is the sum of the series?

jbouyer  Feb 23, 2018

Best Answer 

 #1
avatar+13577 
+1

First one (the rest are very similar)

 

3i       3 (1)  + 3(2)  + 3 (3)  + 3(4) +3 (5) =

             3          6          9          12     15     = 45

 

Think you can try the others now that you see how to do it?

ElectricPavlov  Feb 23, 2018
 #1
avatar+13577 
+1
Best Answer

First one (the rest are very similar)

 

3i       3 (1)  + 3(2)  + 3 (3)  + 3(4) +3 (5) =

             3          6          9          12     15     = 45

 

Think you can try the others now that you see how to do it?

ElectricPavlov  Feb 23, 2018

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