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Here we have two simultaneous equations with two unknowns. In order to solve this, we must first elimate one of the variables. 

To do this we will first make the coefficient (the number b...

There's a handy trick for choosing which of the equations of motion, or SUVAT equations, you need to use given a set of terms – let’s call it the VUAST trick. For these kinds of questions, there are al...

A Probability Mass Function is a function used to describe the liklihood of the outcome of a random event that has a finite number of possible outcomes. The domain is the range of possible outcomes of ...

We recall that the number of ways to order n distinct objects in a STRING is n! (n factorial, n.(n-1).(n-2)...2.1 Familiarity with this is prerequisites for tackling this question)We begin, as is best in ...

This kind of question demonstrates the fact that certain problems can be expressed in much simpler ways so they be easily solved.  In this particular example the question can be simplified to "int...