Answer :

a = – 19, d = – 4

Let a_{1} = a = – 19

Since, the common difference d = – 4

Using formula a_{n + 1} = a_{n} + d

Thus, a_{2} = a_{1} + d = – 19 + ( – 4) = – 19 – 4 = – 23

a_{3 =} a_{2} + d = – 23 + ( – 4) = – 23 – 4 = – 27

a_{4} = a_{3} + d = – 27 + ( – 4) = – 27 – 4 = – 31

Hence, An A.P with common difference – 4 is – 19, – 23, – 27, – 31,….

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Attempt any five Maharashtra Board - Algebra Papers

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Attempt any five Maharashtra Board - Algebra Papers

<span lang="EN-USMHB - Mathematics Part-1

<span lang="EN-USMHB - Mathematics Part-1

<span lang="EN-USMHB - Mathematics Part-1

<span lang="EN-USMHB - Mathematics Part-1

<span lang="EN-USMHB - Mathematics Part-1

<span lang="EN-USMHB - Mathematics Part-1