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Python supports all of the math operations that you would expect. The basic ones are addition, subtraction, multiplication, and division. Other ones include the exponentiation Basic Questions Of Maths For Class 9 Key and modulo operators, which you will see in a moment.
Even though we used variables for the addition, we could just as well have entered numbers instead. Notice how I printed out the result of the division � being an expression � directly, instead of storing the result within a variable. When printing out values, we are using a function named print.
The point is that this function takes an argument. Either way, the above line of code prints out the number 3.
Note that this number is actually of the type float � being numbers with decimals � instead of int. In this case we are dividing two integers i. So the fact that divisions always result in floating point numbers is just convenient for us in case we need to perform some further operations on the number.
Note that if we multiply two integers, the result is of the data type int. If we multiply by at least one decimal number, the result is a float value. Consider the some basic Basic Questions Of Maths For Class 9 Level questions of maths python example. This raises 2 to the power of 10, also noted as 2 10where 10 is the exponent.
Without getting too much into math, this is the equivalent of multiplying 2 by itself 10 times, i. As you can see, using the exponential operator is much more convenient than typing all of that out manually.
The result of the above is Another math operator, is the modulo operator. What this operator does, is that it performs a division and then returns the remainder of the division. Consider the following examples.
The first line outputs 0. What happens is that 4 is divided by 2, leaving a remainder of 0. The second line divides 4 by 3, which leaves a remainder of 1. Hopefully that makes sense. So what is the point of this operator? Typically you are not interested in the remainder itself, but just determining whether one number is divisible by some basic questions of maths python number.
We will get back to examples of this at a later point, but a simple example could be to highlight every second row some basic questions of maths python a table by checking if the current row number is divisible by two i. Again, more on that later. The last math operator that we will look at, is the floor division operator. Suppose that we divide 10 by 3, for instance. This division yields a floating point number i. When using floor division, the result of a division is rounded down to the nearest integer value, i.
Consider the following example, where the floor division is denoted by two slashes, i. The division itself results in the decimal number 3. This number is then rounded some basic questions of maths python to the nearest full number, being 3.
So the result of the above is the integer 3. But what if the division results in a negative number? Suppose that we divide by 3, which gives What would the result of the following then be? The result would actually be So if the result of the division is less than zero, we round away from zeroso to speak.
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