# Probability

W
Shared by:
Categories
Tags
-
Stats
views:
8
posted:
9/17/2012
language:
Unknown
pages:
6
Document Sample

```							The Fête
A pupil opens a stall at a school
fête.
He has twelve rubber ducks
floating in a bucket of water.
Each player pays 50p and picks
out a duck.

50p!
If it is marked with a

then the player wins a prize.
If it is marked with a

then the player wins a free go.
Two ducks are marked with a

and three ducks are marked with
a
What is the probability of
winning a free go?
What is the probability of
winning a prize?

50p!
Some friends decide to be
cheeky. One person plays but
picks out a losing duck.
The next person remembers the
losing duck and picks out a
different one.
What is the probability that he

50p!
The pupil notices that people are
cheating so he decides to change
the rules.
Now players must pick two
ducks and get a matching pair of

to win a prize.
What is the probability of
winning a prize now?
50p!

```
Related docs
Other docs by ajizai
True scary creatures.ppt - bishopcook09