Background Some time back we took a look at what database indexing is and how it internally works. - How does database indexing work? ...

Background If you have written queries or worked on a project that requires database support then you must have use or atleast familiar ...

Question You have 25 horses and you need to pick fastest 3 horses out of those. In each race you can race maximum of 5 horses as t...

Question There are 10 coin placed in front of you 5 of which are heads and 5 of which are tails. You are blind folded so you don...

Question A man in stranded on an island covered in forest. Wind is blowing from the west. Lightning strikes to the west side of th...