Question

Hey Buddies,

You have 3 switches in a room. One of them is for a bulb in next room. You can not see whether the bulb is on or off, until you enter the room. What is the minimum number of times you need to go in to the room to determine which switch corresponds to the bulb in next room??

Answer 1

2! Because the first time you walk in to see if the 1st switch turned it on. If no, then you go in to see if the 2nd switch turned it on. If yes, then that's it. If no, then you don't have to go back in the room to see if the last switch turned it on because there is only one more switch so it must turn it in.

Answer 2

Hi friend it is so easy ,the answer is one time ,it is possible like this first put on 1st switch and be for 5 min and off and after put on 2nd switch and be for 5min and now on 3rd switch and get in to the room ,if the bulb is in it is 3rd bulb and if the bulb is not on touch the bulb if the bulb is slightly heat it is 2nd switch and if the bulb is cool it is 1st switch

friend please mark me as brainiest answer and also follow me