RIDDLES -- Dimag ki batti jalao

rakeshsehrawat said:
Ghata karde hoye galti ho gayee
hisab aala hisab kitab dawandol e rehya apna
Upar tein upar aale dk ki nakal aur mar li
DK padhya kar bhai manne bhi pass hona hai je fail ho gya to tera budka bhar lunga
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Ya Rakesh Bhai, जाटो की बुग्गी खांचे में ना फंसा करती, वो तो पक्के में ही अटके से
try this one
n (≥ 4) lights are arranged in a circle. You can turn a light on or off by touching it. However, turning any light on or off will also toggle the state of its two adjacent neighbours. (That is, supposing a light is off, the one of the left of it is off and the one to the right of it is on, touching the middle light will turn it on, its left neighbour on and its right neighbour off.)

The n lights are all on. How do you turn them all off?
 
sanjeev_balyan said:
Ya Rakesh Bhai, जाटो की बुग्गी खांचे में ना फंसा करती, वो तो पक्के में ही अटके से
try this one
n (≥ 4) lights are arranged in a circle. You can turn a light on or off by touching it. However, turning any light on or off will also toggle the state of its two adjacent neighbours. (That is, supposing a light is off, the one of the left of it is off and the one to the right of it is on, touching the middle light will turn it on, its left neighbour on and its right neighbour off.)

The n lights are all on. How do you turn them all off?
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ek ek chod ke bujha de bhai
 
htomar said:
galat kaha rakesh bhai...ekek chhodkar nahi hoga..touch the light numer as 2,5,8,11,.....and so on...
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yr Ans is correct in only one condition ie, if total nos of lights are 5 or 8 or 11 or 14 and so on. what about other possibilities(means 6,7,9,10,12,13-----)
 
Sanjeev ji that answer is right..Touch any light then skip two lights and then touch next. again skip two and touch next.It doesn't matter either the light u r touching on or off.Keep the process untill all lights turned off.
 
htomar said:
Sanjeev ji that answer is right..Touch any light then skip two lights and then touch next. again skip two and touch next.It doesn't matter either the light u r touching on or off.Keep the process untill all lights turned off.
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Tomar bhai, these lights r in a circle. so when u will touch the last light , it will change the position of first light. yr ans is correct if total ligts are 3xn. (my previous assumption was wrong). see the following points
(a) in case of 12 lights (3n) - yr ans is correct
(b) in case of 11 lights (3n-1) - light no 1 will get on,when u will touch the no 11
(c) in case of thirteen (3n +1) lights- last light will not get off (neighbours are untouched)
 
Yaa lights are in a circle.so try it and keep moving round the circle according to my method untill all lights turned off..It works for any number of lights.
 
Sanjeev bhai ye 3n ,3n-1 wala chakkar samjh nahi aa raha ki trumse kaha galti ho rahi hai...simple si baat hai..koi 1 touch karo uske baad 2-2 chhodkar touch karte raho.jab sab light off ho jaye tab stop kar dena..jab tak 1 bhi on hai ghumte raho circle par...mene sab numbers par try kar liya it works for all...
 
Mere bhai, kyun ghirnee chadhan laghra se. BTW yr ans is correct. per ganna e dimag laga diye. see again and attack at the root of the problem. still one good ans is available and u 'll say 'oohh' after knowing that. (एक एक टहनी काट काट के पेड़ गिराया तो क्या गिराया, जड़ पे मार एक बेर के मी ही गिर जा गा)
 
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