Question

A = 3 , n = 8, s =192 find d

Answer 1

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s=a/2+(n-1)d

192=3/2+(8-1)d

192×2/3=7d

94×2/7=d

d=188/7

d=26.8

Answer 2

The value of d will be "6".

Step-by-step explanation:

$The \ given \ values \ are:\\a=3\\n=8\\S=192\\d=?\\As \ we \ know:\\S=\frac{n}{2}[2a+(n-1)d]\\On \ putting \ tha \ values \ in \ the \ above \ formula,we \ get\\192=\frac{8}{2}[2 \times 3(8-1)d] \\192=4[6+7d]\\\frac{192}{4}=6+7d \\48=6+7d\\48-6=7d\\42=7d\\d=\frac{42}{7}\\d=6$

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