Question

write first four teens of the A.P d=-3 a= 10 ​

Answer 1

$= > a1 \: or \: a = 10 \\ = > a2 = 10 + (2 - 1) \times ( - 3) = 7 \\ = > a3 = 10 + (3 - 1) \times ( - 3) = 4 \\ = > a4 = 10 + (4 - 1) \times ( - 3) = 1$

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