Probability - what'[s the chance of opening the right suitcase?

Check out this game that uses probability.
Can you use what you know about chance to help you make the right choice?

Link to the game.

Finish off these statements with the right ending...
even chance or 50:50, unlikely, certainty or 100%

One chance out of 26 =
One chance out of 1 =
One chance out of 2 =