It will be 76.
Some logic should be given either the three simultaneous equations or logic like From first column and third column R-B=26 From third and second column R-W=15 Subtract W-B=11 Use this relation to compare third and fourth columns giving the value of this column =76
What should be the value of the fourth column?
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 ?
