What is the probability of choosing an even number from the set of numbers: {11,12,13,14,15,16,17,18,19}.

%
(Round the answer to have 2 decimal places if needed)

There are 5 even numbers in the set: 12, 14, 16, 18, 19.

So, the probability of choosing an even number is 5/9 ≈ 0.56.