tcs - in 20 bottles of drinks one is poisoned if a person tastes a drop of that he will die in exactly 10 hours to prevent any harm then doctor decides to check and remove that bottle by using specific number of mice within a total duration of 16 hours then fi - skillgun

Give a little amount of drink from each bottle with a time gap of some minutes and notice the time.
Start calculating time if death starts, so that the poisoned bottle can be found.
i.e.,
At 1st min the mouse tastes 1st bottle, if it is poisoned then it dies at 10 hr 1 min.After 15 mins the mouse tastes 2nd bottle, if it is poisoned then it dies at 10 hr 15 minAfter 30 minutes the mouse tastes 3rd bottle, if it is poisoned then it dies at 10 hr 30 min like After 4 hrs 30 mins the mouse tastes 19th bottle, if it is poisoned then it dies at 14 hrs 30 min.If the mouse is still alive after 14 hrs 30 min, then the poison will be in the 20th bottle.