Question

If (k-3),(2k+1),(4k+3) are the three consecutive terms of an AP
Find k

Answer 1

If the above three terms are in A.P.

Then

2k +1 -(k-3) = 4k+3 - (2k+1)

2 k +1 -k +3 = 4k +3 -2k -1

k + 4 = 2k +2

k = 2

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