Question

If k,2k-1,2k+1 are 3consecutive term of A.Pthen find the value of k​

Answer 1

Answer:

If a,b, c are in Ap

b-a = c-b-----(1)

According to the given problem

a=k, b=2k-1, c=2k+1

Using (1)

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

2k-1-k =2k+1-2k+1

k-1 = 2

k=2+1

k=3

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Answer 2

Answer:

2k-1-k = 2k+1- 2k+1

k-1=2

k=3

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