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In mathematics, an irrational number is any real number that cannot be expressed as a ratio a/b, where a and b are integers and b is non-zero. Informally, this means that an irrational number cannot be represented as a simple fraction.How do you use mean in math?
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.What is the meaning of Justify in math?
To me, "justify" means to lay out the mathematical thought process step by step, so that the line from the starting point to the ending point is connected. It is a bit less formal than a proof, which has certain logical requirements, but it means, "show enough work so that I know that you get the whole thing.".