A single die is rolled twice. Find the probability of rolling a 2 the first time and a 1 the second time.

Question

asked Mar 10, 2023 26.5k views

1 Answer

Khamitimur · Answer 1 · 2023-03-14T11:45:09+0000

Hello!

When we roll a dice, we can get six different possibilities, that are:

{1, 2, 3, 4, 5, 6}.

Knowing it, let's answer your question:

First, let's calculate the probability of rolling 2 the first time:

$\frac{\text{possibility that we want}}{\text{ total of possibilities}}=(1)/(6)$

Note: there's only one chance in six to obtain 2 when we roll a dice.

Now, the probability to obtain 1 the second time:

As I mentioned, there's only one chance to the