Based on the graphic that Burns posted:
There are 64 possible outcome combos....obviously some have a much higher probability than others.
(And, REMEMBER - that graphic is assuming an ILLINI loss to Michigan. If Illinois beats Michigan, then Illinois is likely going to Indy.)
But, in total, of the 64 outcomes (assuming an Illinois loss at Michigan):
Iowa goes to the title game in 24 of the scenarios
Purdue goes to the title game in 12 of the scenarios
Minnesota goes to title game in 12 of the scenarios
Illinois goes to the title game in 10 of the scenarios
Wisconsin goes to the title game 4 of the scenarios.