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Question
Write an A.P. whose first term is a and common difference is d in the following.
a = –19, d = –4
Solution
a = –19, d = –4
t1 = a = –19
t2 = a + d = –19 + (–4) = –19 – 4 = –23
t3 = a + 2d = –19 + 2(–4) = –19 – 8 = –27
t4 = a + 3d = –19 + 3(–4) = –19 – 12 = –31
∴ A.P. is –19, –23, –27, –31, .......
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