Question : What is the sum of all the common terms between the given series
Option 1: 6974
Option 2: 6750
Option 3: 7140
Option 4: 6860
Correct Answer: 6974
Solution :
Given: The series is
From series
⇒
Use the formulas,
where
⇒
⇒
⇒
⇒
⇒
⇒
So, the value of
The sum of all the common terms between the given series S1 and S2
=
=
=
=
=
Hence, the correct answer is 6974.
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