Standard Chartered Online test/assesment

Hello house, i will appreciate anybody that has the clue to how Standard Chartered Bank make their Graduate Selection.

Its the second time i will be taking their assesment test within a space of a year,and at both time i was told they are sorry they wont be able to continue my application to the next stage after the talent assessment.

Why is their nut so hard to crack? And whoever that has tips of how their questions are to be answered in order to pass that stage should kindly assist. As this will be beneficial to lots of Nigerian graduates who are about doing their online assesment test in the ongoing GRADUATE RECRUITMENT PROGRAM