If you roll two number cubes, what is the probability of their sum being seven or higher?

Question

parthkohli · Answer

I always keep this in my important files.

anonymous · Answer

I was going to draw that @ParthKohli ......... smart work

parthkohli · Answer

Check how many total numbers you see, and then see how many 7's you see as well.

parthkohli · Answer

Total numbers is also known as sample space, btw.

anonymous · Answer

whats the sample space?

parthkohli · Answer

The number of numbers you see in there. 
Sample space is the total number of possibilities.

anonymous · Answer

so 36?

parthkohli · Answer

Yeah! And now just see the number of 7's.

anonymous · Answer

6

anonymous · Answer

so do i divide them?

anonymous · Answer

If you roll a pair of six sided number cubes the probability of rolling two numbers whose sum is 6 is 5/36 or 0.1389. There are 5 ways to get 6: 1,5 & 5,1 & 4,2 & 2,4 & 3,3. There are 36 outcomes for a roll of 2 dice.

anonymous · Answer

its 7 not 6

anonymous · Answer

yeah

anonymous · Answer

but it still dont make sense. none of those are an option. i tried 6/36

anonymous · Answer

and when reducing it i get 1/6 and thats not an option either