



 
Mohd, That is not a question that has a very tidy answer! It can be estimated in various ways, for instance (see below) http://en.wikipedia.org/wiki/Harmonic_number or given by a series that starts gamma + ln(100) + 1/200  1/120000 + 1/12000000000 +... where gamma is the EulerMascheroni constant 0.5772156649... and the sum is about 5.18739418. The first three terms are exact enough for most purposes. Good Hunting!  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 