Question

Two number cubes are rolled. What is the probability that the sum of the numbers rolled is either a 6 or an 8?

Answer 1

@ILoveShawnMendes

Answer 2

probability is a lie

Answer 3

can you make a table of all of the possible rolls?

1 1
1 2
1 3
1 4
1 5
1 6
2 1
2 2
2 3
...
6 4
6 5
6 6

how many rows in the table?
how many of those rows represent rolls where the total is 6 or 8?

the latter number divided by the former number is the probability

Answer 4

24
5

Answer 5

@whpalmer4

Answer 6

no.. how many different numbers are there on 1 number cube?

Answer 7

6

Answer 8

the table isnt helping

Answer 9

you can roll 6, four times and roll 8, three times

Answer 10

1 2 3 4 5 6
right?

and that means we should have 6 rows for each number rolled as the first cube, to cover the 6 different possible rolls of the second cube

so if we roll a 1 for first roll, the second roll can be 1 2 3 4 5 6 giving us
1 1
1 2
1 3
1 4
1 5
1 6

as the possible rolls of two number cubes where the first number rolled is 1. there are 6 possible first rolls, so we have 6*6=36 total possible rolls

agree, disagree?

Answer 11

agree

Answer 12

here are the rolls which add up to 6

1 5
2 4
3 3
4 2
5 1

are there any others?

Answer 13

which rolls add up to 8?

Answer 14

theres three rolls that can add up to 8

Answer 15

I think the answer is 1/2

Answer 16

no, what are three rolls?

Answer 17

5 3
4 4
6 2

and Im waisting a lot of time ... I have other questions to work on

Answer 18

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

Answer 19

hey, if you think you are wasting time by working out a correct answer instead of putting down a wrong one, imagine how I feel about my time spent helping you?

Answer 20

Then dont help me, I dont need someone who truly doesnt want to help me helping me and ill kindly report you

Answer 21

be my guest!

Answer 22

Still need help?

Answer 23

The probability of rolling a six is....
Lets figure this out together with numbers 1-6 what adds up to 6?
1+5
2+4
3+3
4+2
5+1
So that's 5 options.

Now what about 8, what numbers 1-6 add up to 8?
2+6
3+5
4+4
5+3
6+2
So that is also 5 options.

So far the probability is 10, but 10 out of what?

So to figure what 10 is out of, so we need to figure out all the probability of any number that can be rolled.

So all the possibilities involving a 1 are (with numbers1-6):
1+1
1+2 2+1
1+3 3+1
1+4 4+1
1+5 5+1
1+6 6+1

2+2
2+3 3+2
2+4 4+2
2+5 5+2
2+6 6+2

Do you get the point?
3+3
3+4 4+3
3+5 5+3
3+6 6+3

4+4
4+5 5+4
4+6 6+4

5+5
5+6 6+5

6+6

Those are all the possibilities, so with that you can figure out the probability with that, how many of those equations add up to 6 or 8?
There are 36 equations there (none repeating ex.) 2+2 and 2+2), now you have to count the ones that add up to 6 or 8. If you still need help send me a message :D