Trouble figuring out descriptives in data

Hi everyone

I have a major stats exam next week for a job interview. I am struggling on a concept with descriptives stats which is probably very simple but I just cannot get. would someone advise how I can work this out:

In a large sample, ignoring the upper and lower quartiles 5% of the data makes no difference to the value of the median.

Is that true or false? if so how did you work it out?

I think it is true but its because I roughly estimated on a small sample