Seven slips of paper with the numbers 9 through 15 are placed in a box. After mixing well, two slips are drawn. List the different combination formatted as order pairs.
The following is a partial list of the possible pairs.
(9,10),(9,12),(9,13),(9,14),(9,15),(10,12),(10,13),(10,14),(10,15),(11,13),(11,14),(11,15),(12,13),(12,14),(12,15),(13,14),(13,15),(14,15)

what are the missing outcomes?

Question

Seven slips of paper with the numbers 9 through 15 are placed in a box. After mixing well, two slips are drawn. List the different combination formatted as order pairs.
The following is a partial list of the possible pairs.
(9,10),(9,12),(9,13),(9,14),(9,15),(10,12),(10,13),(10,14),(10,15),(11,13),(11,14),(11,15),(12,13),(12,14),(12,15),(13,14),(13,15),(14,15)

what are the missing outcomes?

anonymous · Answer

Let's look at the first five given to us...

(9, 10), (9,12) (9,13) (9, 14) (9.15)

If one slip of paper is a nine, the other slip could be any of the other ones, right?  It could be 10, 11, 12, 13, 14, or 15.  The ordered pairs we have represent pulls of 12, 13, 14,and 15.  We now know the missing one.  We can repeat this process with the next set...

One slip is ten, what could the other ones possibly be?