Yes, some were too long for my tired little brain. But it's not just about memorizing, if you are tone deaf, you can memorize all you want, you just won't hear the difference, you'll memorize it wrong basically.
And yes, if you do it over and over again, if you are not totally tone deaf, you will get better. That's why I didn't try again, knowing that I only paid attention for about half the test, I thought either I'll get bored a lot sooner and the result will be lower or it'll be higher and I won't know if that's just because my ears are already a bit "trained" from the test. I also think you can use it to train your ears.
And the relevance for the Cascio discussion? If most of you had only gotten 50 %, I would not take you seriously in this discussion.