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Highest Power of a Number in a Factorial

In the video below, we will have a look at the techniques to calculate the Highest Power of a Number in a Factorial. Factorial of a number n is given by $n! = n$ x $(n-1)$ x $(n-2)$ x $(n-3)…2$ x $1$ Given a number x, how do we find the highest power of x in […]

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 […]