Maybe you got bored and started going faster towards the end? Or maybe you started out going on instinct and then began to second-guess yourself, in a sort of “beginners luck” way?
Both sound plausible; maybe both happened, their effects on time spent per question cancelling out but their effects on accuracy adding up together.
Both sound plausible; maybe both happened, their effects on time spent per question cancelling out but their effects on accuracy adding up together.