Question

if k+1,2k+1,4k+1 are in A.P. then the value of k​

Answer 1

Answer:

If a,b,c are in A.P then b-a=c-b

So,in the given question,

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

k=2k

The value of k is not coming which means your question is wrong.

Answer 2

Answer:

2k+1-k-1=k

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

K is not equal to 2k

Therefore, k+1,2k+1,4k+1 are not in AP