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Let P(n) be the statement that 11ⁿ - 6 is divisible by 5.

BASE CASE: Let n = 1.  This gives 11¹ - 6 = 5, ...

The key thing with comparison essays is to make sure that the essays do compare the two factors throughout. There are two ways to do this:

1) Compare them directly throug...

Speaking is a difficult thing to practise alone, but there are a few ways you can do it! Here are my top tips:

1) Listen to French radio: you might wonder how this helps ...

Background Information

This is a neutralisation reaction between an acid (sulfuric acid) and a base (copper carbonate). When a carbonate reacts with an acid, the products...

Start by defining key terms

"rate of economic growth" - the annual percentage increase in real GDP, which is one of the government's main macroeconomic objectiv...