Question

for what values of K, K - 3, 2 k + 1 and 4 k + 3 are in AP​

Answer 1

Answer:

Step-by-step explanation:

9 is the correct answer

Answer 2

Answer:For a group of numbers to be in AP a2-a1=a3-a2=an-a(n-1)

Step-by-step explanation:(k-3),(2k+1) and (4k+3) are three consecutive terms of an arithmetic progression.

Hence,

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

k + 4 = 2k + 2

k = 2