In: Math
Consider the following game:
You start with $1. The game is over when you run out of money.
You flip a coin-----Heads means that you win $1 and Tails means that you lose $1
What is the probability that the game will end after:
a. 1 flip of the coin?
b. 2 flips of the coin?
c. 3 flips of the coin?
d. 4 flips of the coin?
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You start with $1. The game is over when you run out of money.
You flip a coin-----Heads means that you win $1 and Tails means that you lose $1
a. probability that the game will end after 1 flip of the coin
=> 1st flip should be tail so that $1 is lost and nothing is left
Probability = 1/2 = 0.5
b. probability that the game will end after 2 flips of the coin
There is no combination for which you will end with no money after 2 flips
Thus, required Probability = 0
c. probability that the game will end after 3 flips of the coin
=> Only combination is Head,Tail,Tail in given order (If first is Tail then the game is over there itself)
Probability = 1/2*1/2*1/2 = 1/8 = 0.125
d. probability that the game will end after 4 flips of the coin
There is no combination for which you will end with no money after 4 flips
Thus, required Probability = 0
Number of Flips | 1 | 2 | 3 | 4 |
P(Game over) | 0.5 | 0 | 0.125 | 0 |