Q1 of 176 Page 20

Find the sum of the following geometric progressions :

to n terms

Common Ratio = r =


∴ Sum of GP for n terms = …(1)


⇒ a = (a2 - b2), r = (a + b), n = n


∴ Substituting the above values in (1) we get


⇒


More from this chapter

All 176 →
1

Find the sum of the following geometric progressions :

1, 3, 9, 27, … to 8 terms

 1

Find the sum of the following geometric progressions :

 1

Find the sum of the following geometric progressions :

4, 2, 1, ….. to 10 terms.

 2

Find the sum of the following geometric series :

0.15 + 0.015 + 0.0015 + … to 8 terms;