It seems to me it is normal to use uniformly the last answer given, when several answers are given, I don't think this reflect any bias. There would be legitimate suspicions of dishonesty if the psychic claimant used, for example, sometimes the first answer, sometimes the second one, each time to try to get the best result, but I don't do that.
You first gave "1" as an answer, in a funny and non-credible way, and then you decided to give (finally) the correct answer (4), which was an improvement. I think that I might know a little the ideas that went through your mind (though I cannot be completely sure, of course), and which led you to post this succession 1, 2, 3, 4.
You reflected that it could be nice to give the right answer, and therefore to be one of the winners of the test. However, it bothered you to reveal too much (that's very typical). Then you had an idea, a kind of compromise: why not give the correct answer (4), but as a sequence (1, 2, 3, 4)? In this way, you gave the right answer, but, at the same time, it sounded like a joke, and you did not reveal too much, which could make you feel uncomfortable later, like Loss Leader for example. And then you implemented your plan.