# Probabilites regarding 3 coin tosses

#### williamrobertsuk

##### New member
Find the problem attached.

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#### LCKurtz

##### Junior Member
We aren't here to work problems for you and just give you answers. Show us what you are thinking on each one and we will comment.

#### pka

##### Elite Member
If we flip any coin three times here are all the possible outcomes.
$$\displaystyle \begin{array}{*{20}{c}} H&H&H\\ H&H&T\\ H&T&H\\ H&T&T\\ T&H&H\\ T&H&T\\ T&T&H\\ T&T&T \end{array}$$
Now YOU do some work. Answer each of the questions and post the results.
If you do not then do not expect any further help.

#### williamrobertsuk

##### New member
If we flip any coin three times here are all the possible outcomes.
$$\displaystyle \begin{array}{*{20}{c}} H&H&H\\ H&H&T\\ H&T&H\\ H&T&T\\ T&H&H\\ T&H&T\\ T&T&H\\ T&T&T \end{array}$$
Now YOU do some work. Answer each of the questions and post the results.
If you do not then do not expect any further help.
Thanks, and I am new here, I started posting before I even read the rules, but I am working on it and I will write back!

#### williamrobertsuk

##### New member
If we flip any coin three times here are all the possible outcomes.
$$\displaystyle \begin{array}{*{20}{c}} H&H&H\\ H&H&T\\ H&T&H\\ H&T&T\\ T&H&H\\ T&H&T\\ T&T&H\\ T&T&T \end{array}$$
Now YOU do some work. Answer each of the questions and post the results.
If you do not then do not expect any further help.
1. =0.125
2.=0.125
Now, the other two, I am still struggling, I thought it could be 0.25, but it ain't. Any help there?

3.=0.37
4.=0.5

#### pka

##### Elite Member
1. =0.125 Correct
2.=0.125 Correct
Now, the other two, I am still struggling, I thought it could be 0.25, but it ain't. Any help there?

#### williamrobertsuk

##### New member
I managed to calculate 4 and 5, the answers are posted above! Thanks!

#### JeffM

##### Elite Member
Each sequence is equiprobable. But some sequences have the same total number of heads and tails as other sequences.