Wanted to comment on the alleged change in quant section. A commonality among review materials (barrons, pr, kaplan) was that when you hit permutations and combs it means you are doing well.
I expected to hit plenty of them based on my practice tests, but I choked on this gmat...600. i only hit upper 30's in quant. And I have to estimate that nearly half were data sufficiency.
Also heavy on number theory. Light on work problems I thought.
So, why are hard perm/comb question appearing an mediocre scoring test?