Help with Probability Equation

I'm trying to put together an app for fun that has a scenario where I need to figure out a probability equation for the following scenario: Suppose I have a number of attempts at something and each attempt has a success rate (known ahead of time). What are the odds after doing all those attempts that a success happens? For example there are three attempts (all will be taken individually). The first is known to have a 60% success rate. The second is known to have a 30% success rate. The third is known to have a 75% success rate. What are the odds of a success occurring if all three attempts are made? I've tried several formulas and can't pinpoint the correct one. Thanks for the help!