Does this mean that if Mean and median of a series are equal, it does not necessarily should be a AP series, because if you try solving this question using that logic, the answer comes out to be 65

I have been giving GMAT since 2010 and every year after that.

my scores have been -

640 - 48,28
660 - 45, 36
640 - 48, 28
620 - 50, 25


Clearly I should stop trying now. I guess GMAT was never for me.

seriously someone suggest what shud i do.

Thanks a lot Stacey for the response. The test scores are listed in order that they were taken in the last 2 years, 620 being the most recent. I have no idea why I did not score good in quant in my highest s far - 660. A 49/50 would have easily made it a nice 700 which i have been trying like for ev...