This paper builds on the work of Nichols & Greenhow and Nichols Gill & Greenhow on the development of online objective questions for mathematics formative and diagnostic testing using Question Mark Perception. Questions in linear algebra exploit the use of random parameters to spectacular effect whereby the 49 question styles developed so far will produce of the order of 1025 question realisations seen by the students. Copying will therefore be impossible and it is hoped that after a few attempts and serious study of the feedback offered the students will realise that despite the different numbers displayed they are actually answering the same question from the algebraic viewpoint. They will perhaps gain a deeper understanding of concepts such as linear dependence. Evidence for this conjecture will be collected in the next academic year and reported on.
