TOPIC id: 70490
Replies: 7 - Views: 719
ronniebasak22 2011-01-08 13:22:21
Can u solve it?(my phone dont have plus, pls consider "@" as Plus)
1 @ 1/2 @ 1/4 @ 1/16 @ 1/32 .....(n)< X
i.e sum of these can never reach a number. what is the least value of it.
here, n can b any positive number (including infinity)
ronniebasak22 2011-01-08 13:25:25
by the way the terms are in GEOMETRIC PROGRESSION. but I don't know if u calculate it with sum of G.P formula. Try it..
ronniebasak22 2011-01-08 21:32:48
Sorry, plz note the sign
its not "=" its "<". I know that any one can solve it with "=". The series can never reach a number. what is the least value. The sum was discovered by Srinivas Ramanujan. And its logical sum nt imaginary.
ronniebasak22 2011-01-08 21:37:36
Clue: the number is not greater than 10 and not less than 1. And its a Natural number that means it can neither be fractional nor include "n".
ronniebasak22 2011-01-09 21:10:29
The problem was given by a class X(10)
ronniebasak22 2011-01-10 10:14:56
Yes! The ans is always less than 2. because.
2-1=1 but it added 1/2.
2-3/2=1/2 but it added 1/4.
So as u go on it adds half of the distance to reach 2. So 2 is the least value.
Ashvin34 2011-01-10 22:04:03
What is wapSPELL?
wapSPELL is an effort to unite like-minded people from all over the world. It is a social networking service for mobile where people from all over the world can be in touch with each other. You can easily find friends of your own interests.
Every user can make rich profiles, which act as amazing introduction to others. You can easily express yourself through our discussion forums. All the users can be contacted via the conveniently available private messaging. We also provide you an innovative mode of communication which we are the first ever to provide - The Bubbles. Bubbles are instant messages which get delivered right in front of the receiver without any delays! Bubbles are ultra fast and super convenient. Users can also gather in chatrooms to have group chats along with PMs. To make your messages and texts much more expressive and lively, we provide you more than 5,000 smilies and icons along with various formatting tags (known as Style Tags). They can be used all over the site. :)