Let a, b and c form an H.P. Then 1/a, 1/b and 1/c form an A.P. If a, b and c are in H.P. then 2/b = 1/a + 1/c, which can be simplified as b = 2ac/(a+c) If a and b are two non-zero numbers...
To be good at something, it is better to copy. Most projects are now on google and reports are just copy pasted into a book. Duplication is a mantra in most marketing firms and some copy to the T. Effective...