Question
Find the common difference of the Arithmetic progression
$\frac{1}{a}, \frac{3-a}{3 a}, \frac{3-2 a}{3 a}, \ldots \ldots(a \neq 0)$
$\frac{1}{a}, \frac{3-a}{3 a}, \frac{3-2 a}{3 a}, \ldots \ldots(a \neq 0)$
✓
Answer
$-\frac{1}{3}$
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