Math, asked by RakhiBhedke, 10 months ago

Find the sum of the first 18 terms, of the
arithmetic progression 12b, 8b, 4b, ......
(A) 126b
(B) -56b
(C) 256b
(D) - 288b
Answer if known

Answers

Answered by kush75334

8

Answer:

-396b

Step-by-step explanation:

S =18/2(2*12b + (18-1)*-4b) = -396b

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