@rengaraj • 25 Nov, 2009
Sir / madam,
My question is

A 1 KM long wire is held by 'n' poles. If one pole is removed the length of the gap increases by 5/3 meters. What is the number of poles initially ?

Advance Thanks,
{NIT 23/2007/Pg 3 (Infosys Part-1)}
{On this forum my 12th Question.
@yadavundertaker mohit • 25 Nov, 2009 length of gap with n poles = 1000/(n-1)

new length of gap = 1000/(n-2)

according to question

1000/(n-2)= 5/3 + 1000/(n-1)


on solving n = 26

number of poles initially is 26.....
1000/(n-1)(n-2)= 5/3
@rengaraj • 26 Nov, 2009 Sir,
I got the question from an book but, the solution was 25. But i can't get the steps worked.
But i will try once more.
@yadavundertaker mohit • 26 Nov, 2009 the no. of poles will be 25 after one pole is removed..


length of gaps = total length in meter /(no. of ploes -1) [we minus 1 because a gap will be exist b/w two poles]
@CIVILPRINCESS • 27 Nov, 2009 yes the number of poles initially is 26.by simplifying the equation yadav got we get
26 solves it.
@yadavundertaker mohit • 29 Nov, 2009 hi rengraj

did you check the answer again?....
@rengaraj • 29 Nov, 2009 Sir,
The solution is 25.
@Anil Jain • 30 Nov, 2009 if n poles (n-1) gaps of each 1000/(n-1) width
if n-1 poles (n-2) gaps of each 1000/(n-2) width
1000/(n-2) -1000/(n-1)=5/3
1000(1/(n-2) -1/(n-1))=5/3

so number of poles initially would be 26 only.
@rengaraj • 30 Nov, 2009 Sir,
This is an Infosys question. The given answer is 25.

Related Posts

I thought of compiling a list of the coolest and the best whatsapp group names that you've been using for your respective groups. For the sake of convenience, we'll stick...
A simple good bye email or last working day mail ain't cool! We've some awesome templates that you can use. If you're looking for an amazing Last Working Day email...
Hello CEans, How to convert CGPA (10 Point Scale) to Percentage? Please help!
I heard many students are having a trouble registering on the TCS Portal, when it's quite straightforward actually. If you have problem in attaching photos or CV, Use internet explorer...
What is IES or Indian Engineering Services Exam? Union Public Services Commission (UPSC) conducts the Engineering Services Exam or ESE 2016 is an entrance exam for graduates who wish to...