Question 1183178
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It's not clear from the statement of the problem whether the list is ordered 1st through 10th, or if it is an unordered list of the top 10 teams.<br>
It is probably an ordered list, which means the problem is about permutations.  In that case the number of possible different lists is<br>
P(40,10) = 40*39*38*...*32*31 = (large number)<br>
If the list is not ordered, then the problem is about combinations; in that case the number of possible different lists is<br>
C(40,10) = (40*39*38*...*32*31)/(10*9*8*...*2*1) = 847660528<br>