What's in the bag??

WALT: Learning about Probability
We learnt all about probability, First my partner got the envelope and I got six cubes of 2 colours, I choosed black and white but I swapped it with my other class mates. So we had White and Purple now, We asked our teacher if she could predict for us, we did it eight time and it was time to predict. Miss lavakula predict that it was 4 whites and 2 purple but it was actually 3 whites 3 purples, she wasn't correct but she did a good job.