Find the sum of the following geometric progressions :
4, 2, 1, 
….. to 10 terms.
Common Ratio = r = 
∴ Sum of GP for n terms = 
…(1)
⇒ a = 4, 
, n = 10
∴ Substituting the above values in (1) we get,
⇒ 
⇒ 
⇒ 
1
Find the sum of the following geometric progressions :
4, 2, 1, ….. to 10 terms.
Common Ratio = r =
∴ Sum of GP for n terms = …(1)
⇒ a = 4, , n = 10
∴ Substituting the above values in (1) we get,
⇒
⇒
⇒