रण P AR Akt T o the CenmagcudiwHW . % AP find ¥ 3~ – InterviewSolution

1.

रण P AR Akt T o the CenmagcudiwHW . % AP find ¥ 3~

Answer»

When a, b, c are in AP

2b = a + c

So, here we have

2(2k - 1) = k + 9 + 2k + 7

4k - 2 = 3k + 16

4k - 3k = 16 + 2

k = 18

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