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The purpose of practice questions like this is to ensure that you understand how Python's mathematical operators and methods work and that you can correctly
The purpose of practice questions like this is to ensure that you understand how Python's mathematical operators and methods work and that you can correctly apply the rules of operator precedence. You also need to be aware of data types and how the data type affects the value of an expression. Review the rules, and make sure you understand how they apply in situations like the ones shown below. A summary:
Operators are evaluated in order of precedence, with higherprecedence operators evaluated first.
Operators with the same level of precedence are evaluated according to their associativity, which for arithmetic operators means from left to right.
Subexpressions inside parentheses are always evaluated first, and nested parentheses are evaluated innermost first.
Data types: Numbers are either integers type int or floatingpoint numbers type float Literal numbers that have no decimal point are integers; literal numbers with a decimal point are floatingpoint numbers. If both operands seen by an operator are type int, the result will be type int. If either operand is type float, the result will be type of float. When the operands have different data types, we call that a mixedtype expression. This is legal with numeric types.
A special case: the floatingpoint division operator always produces a floatingpoint result, even if it represents a whole number. The integer division operator always produces a positive or negative whole number result, but the data type of that result depends on the data type of the operands in the same way as for other operators.
The remainder or modulus operator gives the remainder after division that produces an integer result is performed. For example:
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