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Question: In an A.P. T<sub>n</sub> = \(\frac{1}{2}\) (3 – 7n) then common difference of A.P. is-...

In an A.P. Tn = 12\frac{1}{2} (3 – 7n) then common difference of A.P. is-

A

–7

B

–72\frac{7}{2}

C

72\frac{7}{2}

D

None of these

Answer

–72\frac{7}{2}

Explanation

Solution

C.D. = Coefficient of n = – 72\frac{7}{2}