Are they recruiting again or something. The test is of two categories: numerical where u have 2 study the examples given because the real question is a replica of the examples. The verbal or critical reasonin is all about a small passage with questions whose options are true, false or cannot say.
Just study the SHL GMAT or u can visit the SHL website. Mind u its computer base. U r allowed 2 use a calculator. All the best but u need 2 give more details of ur invitation 4 the benefit of other house members..