If u were invited by Mantrac Nigeria ltd for an aptitude test in lagos, den dis information is specially 4 u.
I wrote mine today(18th April, 09) in Port harcourt. There are 4 different test: 1. Engineering Test 2. Technical Ability Test 3. Computer Test 4. Quantitative and Logical Reasoning Test. You are not allowed to use ur calculator. I wish u all d best of luck and pray God to grant u success.