Math: Probability, please help. (Chance of something happening if you do it twice.)?
I'm wondering, because if you just add 1/6th+1/6th, you get 1/3rd. Which is fine and dandy, but what if you roll those two dice 6 times? You get 1. Yet you could at the same time not once roll a six even if you rolled 50 times. I understand the probability would go up, but never be 1. I'm looking more for the formula, rather than just someone telling me what I'm doing wrong.
I knew 1/6th * 1/6th, but I did not know about the complements, thank you; that helped a lot.
49/50 * 49/50 = 2401/2500ths. .. or 99/2500ths? Roughly 1/25th?