Glad she found out now and not later - from The Times of India:
Groom flunks math test, goes brideless
A groom had to return home without his bride from a marriage hall in Uttar Pradesh's Kanpur Dehat district after he failed to solve a simple mathematical problem.
The bride-to-be got suspicious of the groom's educational qualification. Her cousins asked the groom to solve simple mathematical question, what is 15+6. The groom failed to give the correct answer and the girl refused to marry him on Wednesday.
According to information, groom Ram Baran had come from Etawah district to the marriage hall to marry Lovely, daughter of Mohar Singh. The two families and other villagers gathered at the venue.
Like I said, good thing that she found out now before any legal bindings were in place - I could not imagine spending a life with someone with little or no education or intellect.