Hotel AdeProbability puzzles require you to weigh all the possibilities and pick the most likely outcome.
Mad Ade has just inherited a hotel from his rich Auntie Climax.
The rooms are numbered from 101 to 550.
A room is chosen at random for Mad Ade's first guest.
What is the probability that room number starts with 1, 2 or 3 and ends with 4, 5 or 6?
AnswerThere are total 450 rooms.
Out of which 299 room numbers start with either 1, 2 or 3.
Now out of those 299 rooms only 90 room numbers end with 4, 5 or 6.
So the probability is 90/450 i.e. 1/5 or 0.20
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