Betting on whether the fight will end in an even / odd round

Hello, I'm fairly new to betting on boxing. I don't see this fight going the distance (but would put some money on it just in case). But looking at the odds on whether the fight ends in an even or odd round it's +150 for odd round and +175 for even round. So for this example I'm assuming the fight doesn't go 12 rounds.

If I bet $100 on even total payout is $275. If I bet on odd total payout is $250.

Are these numbers right? I know these are low numbers and if correct profit is still low, but doesn't that mean I could bet on both even and odd and guarantee a profit (again, assuming it doesn't go all 12 rounds).

Just looking for some clarification :) Thanks for the help!

Yes in theory it would mean that, but you could also lose both bets.  So in essence you have $200 at risk to win only 50, 75, or lose all 200.  On rare occasions yes it is possible to find an anomaly in some odds and cobble together a couple different bets that essentially mean the same thing as another type of bet and come away with slightly better odds if it happens.