Download the app

Questions  

Value of y=(0.36)log0.2513+132+133+ upto  is 

Remember concepts with our Masterclasses.

80k Users
60 mins Expert Faculty Ask Questions
a
0.9
b
0.8
c
0.6
d
0.25

Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!

detailed solution

Correct option is C

We have    S=13+132+133+⋯=1/31−1/3=12∴ y=(0.36)loga25⁡(1/2)⇒ log⁡y=log⁡(1/2)log⁡(0.25)log⁡(0.36)                     =−log⁡2−log⁡4log⁡(0.36)=12log⁡(0.36)=log⁡0.6⇒ y=0.6


Similar Questions

Sum of an infinite G.P. is 2 and sum of their cubes is 24, then 5th term of the G.P. is


whats app icon
phone icon