2),find the sum of the first 8 term if a¹ = 2 and r = -4
pa help po:(
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2),find the sum of the first 8 term if a¹ = 2 and r = -4
pa help po:(
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Step-by-step explanation:
Correct option is D.510
Given, a1=2,r=2
Sn=r−1a1(rn−1)
S8=2−12(28−1)
=12(255)
=510