Powerball Odds the same with 1 ticket and 2 tickets?

[Toddy]

Huge debate at work here. It's everyone against me. We've had this debate before. People think that say the odds are 1-135 million that if you buy 2 tickets the odds are still pretty much 1-135 mil. I said no it would be 1-67.5 mil and every is pretty much laughing at me. I said it's common math. You have 2 chances in 135 mil. When i said if you buy 10 tickets you have a 1-13.5 mil chance people almost fell over in their chairs laughing. Am I going insane or am I right here?