Question

The 4th term of an ap from the last of an ap-8,-5--------49

Answer 1

$\sf AP = -8\ , \ -5\ , ..........49\\\\\sf \bf Common \ difference = -5-(-8)$

                                $\sf\bf = -5+8$

                                $\sf\bf = 3$

$\boxed{\sf\bf x_{n} =a+(n-1)d}$

$\sf4^{th} \ term = -8+(4-1)3$

           $\sf = -8+3\times3$

           $\sf = -8+9$

           $\sf \bf= 1$

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