154,588 views
8 votes
8 votes
Morgan Roll a number cube with the numbers one through 12 what is the probability that she rolled an even number put answer in percent 

User Iclman
by
2.8k points

1 Answer

13 votes
13 votes

Ok, so:

Morgan roll a number cube with the numers one through 12.

To find the probability, we have to identify the favorable cases and all the possible cases.

In this example, we want to find the probability to roll an even number.

So:

Numbers she rolled:

1 2 3 4 5 6 7 8 9 10 11 12.

Of these numbers, we notice that there's 6 even numbers:

1 2 3 4 5 6 7 8 9 10 11 12.

Now, the probability will be:

P = 6 even numbers (Favorable cases) / 12 numbers in total

P = 1/2.

Then, we express 1/2 in percent, multiplying by 100%:

1/2 * 100% is equal to 50%.

User Midori
by
3.0k points