Like coding interviews in whiteboards for programmers... questions about math/physics/etc... and you have to answer them, and then write in the blackboard you

Like coding interviews in whiteboards for programmers... questions about math/physics/etc... and you have to answer them, and then write in the blackboard your solution. You get graded by solution + the way you explained things. Written, are just like that, written tests, usually not multiple choice, (that is an american invention), but you have to show the work you did to get the result of the problem. They can be easy or brutal, it very depends on how hard is the teach doing the 'interrogation' on you....