So if you get to pick 10 different sets of numbers of 5, and all 5 numbers were random, then there'd be a 1/10 000 chance on winning. Since the population of the servers are around that (and/or a bit below) then it would seem reasonable that at least someone would win the rank 1 prize. This is of course if everyone enters with 10 tags each.

100 million would get this taru a lot of money for relic and salvage armours! >@

Just waiting for that grilled sandwich synthesis recipe...