Hi, 1. The problem statement, all variables and given/known data In case of asymptotic notations we use the formula: t = c * n I dont know what is t and what is n? Is n same thing as the size of problem i.e. input data (or the data we have to process). Does t mean running time? why are we not accounting for number of instructions required to execute the program? 2. Relevant equations t = c * n 3. The attempt at a solution t = running time c = constant n = size of problem (i.e. the input data) Some body please guide me. Zulfi.