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# For the following APs, write the first term and the common difference: (ii) -5, -1, 3, 7, ...

Q : 3    For the following APs, write the first term and the common difference:

(ii)   $\small -5,-1,3,7,...$

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Given AP series is

$\small -5,-1,3,7,...$

Now, the first term of this AP series is -5

Therefore,

First term of AP series (a) = -5

Now,

$a_1=-5 \ \ and \ \ a_2 = -1$

And common difference (d)  = $a_2-a_1 = -1-(-5) = 4$

Therefore, the first term and the common difference is -5 and  4 respectively

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