An arithmetic progression has 3 as its first term.
Also, the sum of the first 8 terms is twice the sum of
the first 5 terms. Then what is the common
difference?
🎥 Video solution / Text Solution of this question is given below:
Step 1: Write sum formula
$S_n = \dfrac{n}{2}[2a + (n-1)d]$
Commented Jun 15, 2021
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