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Questions and Answers
What is the result of $5 + 3 * 2$ in Python?
Which of the following is a valid variable name in Python?
What does the '//' operator do in Python?
In Python, which operator is used for exponentiation?
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Which of the following is NOT a valid variable name in Python?
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What is the result of $10 / 3$ when using integer division in Python?
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In Python, what is the result of $4 ** 3$?
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Which of the following is a valid variable name in Python?
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What is the result of $7 // 3$ in Python?
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Study Notes
Arithmetic Operations in Python
- The expression
5 + 3 * 2evaluates to 11 due to the order of operations (multiplication before addition). - Integer division of
10 / 3in Python returns 3.3333, but it's important to note that the result can vary based on the operator used. - Using integer division with
//gives the result of10 // 3as 3, truncating the decimal.
Python Operators
- The
//operator in Python performs integer (floor) division, discarding the fractional part of the quotient. - The
**operator is used for exponentiation, so4 ** 3calculates to 64 (4 raised to the power of 3).
Validity of Variable Names
- Valid variable names in Python may include letters, digits, and underscores, but must begin with a letter or an underscore.
- Examples of valid variable names:
myVariable,_variable, andvar123. - Invalid variable names cannot start with a digit or contain special characters like
@,#, etc. - An example of an invalid variable name might be
123variable, which starts with a number.
Division Specifics in Python
- The result of
7 // 3is 2, as it performs integer division. - Understanding how different divisions operate in Python is crucial for accurate coding and expected outputs.
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Description
Test your knowledge of Python operators and variables with this quiz. Determine the result of an expression, identify valid variable names, and understand the functionality of specific operators.
