Question

8. If 2k - 1,9k, 5k + 23, ae in in A.P., then find value of k.
plz do it fast .​

Answer 1

If they are in Arithmetic progression, common ratio will be same.

so, 9k-(2k-1)= (5k+23-9k)

or, 9k-2k+1= 23-4k

or, 7k+1= 23-4k

or, 11k = 22

or, k = 22/11= 2