Question

find common difference of an ap 1/2a,1-2a/2a,1-4a/2a​

Answer 1

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$\\ \\common \: difference \: = a2 - a1 \\ \frac{1 - 2a}{2a} - \frac{1}{2} \\ \\ \frac{ - 2a}{2a} \\ \\ - 1 \\common \: difference = a3 - a2 \\ \\ \frac{1 - 4a}{2a} - \frac{(1 - 2a)}{2a} \\ \\ \frac{1 -4a - 1 + 2a }{2a} \\ \\ \frac{ - 2a}{2a} = - 1 \\ \\ \\ hence \: common \: difference = - 1$

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