50% but for me it was a poorly designed test because of the memory involved. I am by no means tone deaf as I have played in multiple jazz ensemble's and saxophone quartets which means I'm not tone deaf. Don't let a low score lead you to believe you really are tone deaf!
Also I got 52.8%, it might have been the memory deficit because I had a hard time remembering what the first tone was, but in academics I usually have an almost photographic memory.
91.7 If you can't remember less than 10 seconds of single or duel tones at once then you might want to take a test to see how many chromosomes you have