240 is definitely very competitive. There are 350 questions, 50 of which are included for evaluation purposes only, they are not counted toward the total score. Noone knows how many correctly answered questions correlate to a certain score, but they say around 60% correct is required to pass. I suppose, given the mean (217 when I took it) and the SD (23 when I took it), one could make an estimate of the percentage needed to get say 240 assuming that 60% is in fact the passing score (182 on the three-digit scale).
OTOH, this information is hardly useful, since you don't know the difficulty level of the questions you will be getting on the actual exam...