I would like to inform all aspiring GMAT takers - DO NOT EVER GO TO JAMBOREE. The main reason why they have been able to be in the business till now is just because of their question bank.
But now, I have seen that poor quality of the online portal they provide which contains few mocks and practice papers. Many of the answers are WRONG.
Moreover, at many instances, the correct answer option they tell differs from the options they give in explanations. This adds to the confusion and frustration on them.
I had emailed JAMBOREE of this as well. Sincerely, do not ever try JAMBOREE.