What should be the value of the fourth column?
61
Comparing first 2 columns we get 4 grey + 4 black = 104, grey+black=26, from the third column- white = (66-26)/2=20 So, grey = 15, black = 11, white = 20 Last column = 2*15+11+20 = 61
The sequence k, k^2, 16, k^3 has four terms in which first three terms are in GP. What should be added in fourth term to get the last 3 terms in AP ?
