For a wedding photoshoot Ravi needs two bulbs around the mirror. There are only two slots for the light bulbs on either side. He h

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.​

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    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.

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