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# Units digit of a number raised to power

Here, we will see how to find the units digit of a number that is in the form ${x^y}$. We will first try to understand what is a units digit, then we will look at the technique to find the units digit of large powers and then using this technique we will solve some problems […]

# Percentage problems involving two variables

In this post we will see how to deal with percentage problems involving two variables. Consider the two problems on percentage given below, If A x B = k, where A and B are variables and k is constant, then if A increases by 10%, what is the percentage change in B? If A’s salary […]