13 Aug, 2010

# 1 hour candles

Articles related to 1 hour candles

## Reminder after dividing factorial 1! + 2! + 3! + ? + 100! By 7?

http://digitalpbk.com/interview-questions/reminder-after-dividing-1-factorial-2-3-100-7 Reminder after dividing factorial 1! + 2! + 3! + ? + 100! By 7? None (a + b + c + d + .... x ) / 7 = a/7 + b/7 + c/7 + .... x / 7 Therefore 1!+2!+..100! / 7 = 1!/7 + .. 7!/7 + ..100! / 7 Reminder of (a+b)/7 = Reminder(Reminder (a/7) + Reminder (b/7)) / 7 Since Reminder of all numbers from 7! to 100! are 0 , Reminder of 1!+..100! is 1!+2!+3!+..6! = 1 + 2 + 6 + 24 + 120 + 720 = 873 Reminder of 873 divided by 7 is 5 Hence Answer : 5 Interview Questions ...
Published 3 years, 9 months ago

## Getting Wifi to Work with Fedora 8 on V3000

http://digitalpbk.blogspot.com/2008/02/fedora-8-presario-v3000-wifi-install.html Getting Wifi to Work with Fedora 8 on V3000 So far...Downloaded NDISWrapper.Tried make. Got[root@localhost ndiswrapper-1.52]# makemake -C drivermake[1]: Entering directory `/home/arun/ndiswrapper-1.52/driver'Makefile:24: *** Kernel tree not found - please set KBUILD to configured kernel. Stop.make[1]: Leaving directory `/home/arun/ndiswrapper-1.52/driver'make: *** [all] Error 2Problem was I dint have the source, downloading source. But what is the kernel number ?uname -rI knew I had ...
Published 5 years, 10 months ago

## Acer Aspire 4520 vs Compaq Presario V3000AU : A wifi comparison

http://digitalpbk.blogspot.com/2009/05/compaq-presario-v3000-wifi-problem.html Acer Aspire 4520 vs Compaq Presario V3000AU : A wifi comparison IntroThis is a first hand comparison between the wireless adapter performance between the Compaq Presario V3000/3155AU and an Acer Aspire 4520.The testThe test I did is to ping the local wireless router / access point.ping 10.0.0.1 -n 100These is the result of Acer AspireReply from 10.0.0.1: bytes=32 time=1ms TTL=64Reply from 10.0.0.1: bytes=32 time=1ms TTL=64Reply from 10.0.0.1: bytes=32 time=1ms TTL=64Reply from 10.0.0.1: bytes ...
Published 4 years, 7 months ago

## Combinations to Reach Nth Stair by moving up one step or two step at a time.

http://digitalpbk.com/interview-questions/stairs-one-step-two-step-total-combination Combinations to Reach Nth Stair by moving up one step or two step at a time. None The answer to this can be found out by induction. To reach the Nth Stair, we can reach by jumping one step from the (N - 1)th stair or jumping 2 steps from the (N-2)th chair. If we denote Number of Ways of reach N as F(N) F(N) = F(N-1) + F(N-2). Does that ring any bells ? It is the general form of the Nth term of the Fibonacci sequence. So to reach the Nth stair, the (N+1)th number in the Fibonacci ...
Published 3 years, 10 months ago

## Number of Tennis Balls to make a 4 sided pyramid of 25 levels

http://digitalpbk.com/interview-questions/number-tennis-balls-make-4-sided-pyramid-25-levels Number of Tennis Balls to make a 4 sided pyramid of 25 levels Answer : 5525 Balls Start from the top of the pyramid. For a pyramid of 1 level - Number of Tennis balls required is 1 For a pyramid of 2 level - Number of Tennis balls required is 1 + 4 For a pyramid of 3 level - Number of Tennis balls required is 1 + 4 + 9 For a pyramid of 4 level - Number of Tennis balls required is 1 + 4 + 9 + 16 How do you go about doing this is each level of N balls requires N+1 balls as support in the case ...
Published 4 years ago

http://digitalpbk.com/interview-questions/mmxi-google-logo-mmxl MMXI in Google Logo None I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 M = 1000 It's not L... That letter is I M + M + X + I = 1000 + 1000 + 10 + 1 MMXI = 2011 Interview Questions ...
Published 2 years, 11 months ago

## Installing GCC for Linux (Fedora Core 6)

http://digitalpbk.blogspot.com/2007/04/installing-gcc-for-linux-fedora-core-6.html Installing GCC for Linux (Fedora Core 6) IntroductionPhew! Here are the steps for installing the GNU C Compiler (GCC) for Linux in Fedora Core 6 .StepsDownload the following files : libgomp-4.1.1-30.i386.rpmglibc-headers-2.5-3.i386.rpmglibc-devel-2.5-3.i386.rpmgcc-4.1.1-30.i386.rpmYou can get the above files by searching for the above files on http://rpmfind.net/linux/rpm2html/search.phpInstall the rpm's , open the console : [.....]# rpm -Uvh libgomp-4.1.1-30.i386.rpm..[.....]# rpm -Uvh ...
Published 6 years, 8 months ago

## Perl Script to Fetch PNR Status reservation on train from Indian Railways

http://digitalpbk.com/perl/script-fetch-pnr-status-reservation-train-indian-railways the code below. Requires: WWW::Mechanize module and PERL. Usage: ./pnr.pl &lt;PNR NUMBER&gt; EDIT: The Railways have changed their interface, so the script also have changed. New Script #!/usr/bin/perl use WWW::Mechanize; my \$mech = WWW::Mechanize->new(); \$pnr = \$ARGV[0]; \$mech->get("http://www.indianrail.gov.in/pnr_Enq.html"); \$part1 = substr(\$pnr,0,3); \$part2 = substr(\$pnr,3); print " Fetching for PNR \$part1-\$part2 \n\n"; \$mech->submit_form( ...
Published 3 years, 10 months ago

## BASH Playlist handler and mpg123 interface

http://digitalpbk.blogspot.com/2008/05/bash-mp3-player-mpg123-sed-playlist.html BASH Playlist handler and mpg123 interface My First "somewhat" USeful BASH scriptThis small script scans your / directory and generates a playlist of mp3 files, and you can play your file by ./juke . You will get a list of songs matching your criteria.InstallationCopy the source code,given below, to a new file named juke# apt-get install mpg123\$ chmod 755 juke\$ ./juke westSample output and Controlsarun@XiO3:~/bash\$ ./juke happy1 happy birthday2 Avril Lavigne - My Happy ...
Published 5 years, 6 months ago

## Jar of Oranges Apple and Mix of oranges and apple

http://digitalpbk.com/interview-questions/jar-oranges-apple-and-mix-oranges-and-apple Jar of Oranges Apple and Mix of oranges and apple None Answer : 1 Fruit The point to be noted here is that the labels of the jar are all mislabeled, that means the labels always lie. Now suppose we have the 3 jars as Labels on the jarOrangeAppleMixed Possible combination 1AppleMixedOrange Possible combination 2MixedOrangeApple Now take out a fruit from the Jar named mixed. If it is an Orange, that jar is Orange and follows combination 1. If it is an Apple, that jar is Apple and follows ...
Published 4 years ago

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