2. How many terms must be taken from the series 9, 18, 36, ··· to make a total of 567?
3. In the G. P. 2, 6, 18, ···, which term is 486?
4. Find x, if
are in geometrical progression.
5. How can you turn a G. P. into an equation?
6. Insert 4 geometrical means between 4 and 972.
7. Insert 6 geometrical means between