2 Ropes and lighter puzzle

-

You are given 2 ropes and lighter.
Each of 2 ropes has following property if u light 1 end it will take 1 hr to burn other end. Its doesn't necessarily burn at uniform rate . How can u measure a period of 45min...?

Comments

  1. anil13 September 2014 at 03:58

    1. Measuring 30 min: Burn Rope 1 at both ends and Rope2 at only one end
    2. Measuring next 15 min: Burn Rope2 at both ends

    ReplyDelete

Post a Comment

Popular posts from this blog

Disable or enable proxy for Internet explorer or Chrome

-
Internet explorer and Google chrome both shares same proxy settings. So if we change setting in internet explorer, then it also effects in Google chrome. We can change proxy setting from CMD (command line prompt). Disable proxy setting : @ECHO OFF ECHO Configuring Proxy Settings! please wait... REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyEnable /t REG_DWORD /d 0 /f Enable proxy setting : @ECHO OFF ECHO Configuring Proxy Settings! please wait... REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyEnable /t REG_DWORD /d 1 /f REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyServer /t REG_SZ /d address:portNumber /f address: New proxy address portNumber: Port Number Save the commands in a batch file and execute it. It will disable/enable the proxy setting for browser.
Read more

chm viewer unable to show contents

-
In Windows Applications, we use chm file for help contents or for documentations. But we sometimes we are not able to see any contents in chm viewer. While it works fine on another systems. How to solve that: 1. Open command prompt and run as administrator. 2. go to location where chm file is located. 3.  input the file name (xxx.chm) and click on enter. It should work fine. Another way to do. 1. Right click on chm file. 2. Go to properties. 3. Select the Unblock option.
Read more

3 prisoners and 5 hats puzzle

-
Three prisoners and five hats (supposedly two black and three white) are involved. The three prisoners are ordered to stand in a straight line facing the front, with C in front and A at the back. They are told that there will be two black hats and three white hats. One hat is then put on each prisoner's head; each prisoner can only see the hats of the people in front of him and not on his own. The first prisoner that is able to announce the color of his hat correctly will be released. No communication between the prisoners is allowed. Who will announce first....? He first asks Prisoner C, "What is the color of the hat on your head?" Prisoner C thinks for a short while and then replies, "I'm sorry, I do not know." He then asks Prisoner B, "What is the color of the hat on your head?" Prisoner B thinks for a short while and then also replies, "I'm sorry, I do not know." He finally asks Prisoner A, "What is the color of t
Read more