Course: Python

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# Python Base n Representation Quiz

Quiz 4 7 questions

Prerequisites for the quiz

7 questions to solve

Instructions
1. This quiz goes to full-screen once you press the Start button.
2. At the end of the quiz, you are able to review all the questions that you answered wrong and see their explanations.
What does the number `0xff` represent?
`0xff` is a Python integer represented in hexadecimal format. It denotes the integer `255`.
What does the number `0b101` represent?
`0b101` denotes the integer `5`, in binary format. This goes with choice (D).
Are the two numbers `0B111` and `0b111` equivalent?
The prefix `b`, used to denote binary numbers in Python, is case-insensitive. That is, it doesn't matter if we use it as `b` or as `B`. This means that `0B111` and `0b111` are both indeed equivalent.
What does `int('0b1111', 2)` return?
The `int()` function converts a given numeric string into an integer based on the base denoted by its second parameter. In this case, `int('0b1111', 2)` converts the string `'0b1111'` into an integer based on the binary expansion, yielding `15`. Hence, the correct choice is (A). For more details, refer to Python Base n Representation — converting from string to decimal.
What does `bin(10)` return?
The `bin()` function converts a given integer into a binary string. Hence, `bin(10)` converts `10` into `'0b1010'`.
What does `hex(15)` return?
The `hex()` function converts a given integer into a hexadecimal string. Hence, `hex(15)` converts `15` into `'0xf'`.
Which of the following number systems does the number `0o17` denote?
The `o` prefix in Python integers denotes octal numbers. Hence, the correct choice is (B).

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