I need more practice problems(online/books)

[cold_kam]

Hi all,

After completing nine weeks MGMAT syllabus I scored 550 (Q:40 & V:27) on my first MGMAT test. Score of 550 clearly wasn't good enough to start for a target of 700, but it was adequate as this was my first practice GMAT test ever. Well I started to put more hours on GMAT and finished almost all of the problems given in 3 OG books.

Two weeks after my first exam, I scored 620 (Q:46 & V:30). Second attempt shows some improvement but now my problem is I run out of practice problems. I have no more practice problems left. I need some good source of practice problems especially in quant. Preferably problems ranked with difficulty level. I am hitting 53% right on 600-700 level questions so I guess I need to practice more on 600-700 level questions before moving to 700 level questions. Please correct me if I am wrong in my self evaluation.

Please advise.

Thanks in advance.
...kam