Question

For a wedding photoshoot Ravi needs two bulbs around the mirror. There are only two slots for the light bulbs on either side. He has 8 bulbs out of which 4 are working and other four are not working. He need to try it out to find a pair that lights up properly. what is the least number of trials he need for proper lightning.​

Answer 1

Answer :

let's take all bulbs as  

1:2:3:4  

ok ????  

then see its asking the number of trial so we have to write the answer as what t1then see it's asking the number of trial so we have to write the answer as 51 think soo coz  

see  

1:2  

3:4  

4:1  

2:3  

so total outcome 4  

as its asking that he want pair of proper lighting bulbs .  

the answer is 4

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Answer 2

Answer:

Your Ans is 4

Hope this Helpful

Have a nice day ahead