SPM Practice 2 (Geometric Progression) : Question 5

Question 5

The first three terms of a geometric progression are 5k+6, 2k, k-2.
Find
(a) the positive value of k,
(b) the sum from the third  term to the sixth term, using the value of k obtained in (a)

[Hint : For part (b), you have two different methods to solve. Try the question and understand both methods]
Three consecutive term of GP-Click here