I have run into something I am unable to explain and that even after searching online for it so I could really use some help here
I have noticed that on the quant section of GMAT Prep although I answered almost all the questions correctly, I was still getting lots of 600 and even sub 600 questions...? As a result I got Q51 and this doesn't make much sense since was always getting in the Q45-Q47 range on MGMAT CAT's. So what is going on here is this normal on gmatprep (and hence on gmat) or did I my gmatprep program experience a glitch ?
This is an example of a question I received towards the end of the gmatprep test (total 5 mistakes most in the first half).
If 5^21 * 4^11 = 2 * 10^n , what is the value of N?
This seems to be barely even a 600 level question, so what is going on here?
Thanks a lot in advance, I really appreciate it!