Question

You toss a coin and roll a number cube. Find P(heads and an even number)

Answer 1

"and" means summe
P(coin)+P(cube)=1/2+1/6=0,666667
The chance to get head is always 1/2 no matter how often you toss the coin
And the chance to get a number when you roll a number cube is always 1/6

Did you mean that?

Answer 2

there are 12 possible outcomes.
Heads - 1
Heads - 2
Heads - 3
Heads - 4
Heads - 5
Heads - 6
Tails - 1
Tails - 2
Tails - 3
Tails - 4
Tails - 5
Tails - 6

You want heads AND an even number, so that narrows it down to three.
Heads - 2
Heads - 4
Heads - 6

So thats 3/12 chance, which is simply a 25.00 percent chance.


Much simper way to do so is that are 4 outcomes if you don't count the numbers.
Heads - Even
Heads - Odd
Tails - Even
Tails - Odd

so you can also get 25.0% that way.