robvalue, a problem with your proposal is that all it takes is 8,999 different guesses and someone will get it right for sure. There are many more religious people than that, so someone would get the right answer at some point, if enough were inclined to play your game. And since there are different competing religions, the one who got it right could simply say that the ones who got is wrong were wrong because they believe false religions instead of the One True Religion. So I think you might want to work out the details of your proposal a bit more than you have.
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.
