PCEP Practice Question: Data Types, Variables, Basic I/O and Operators

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  `float` with value `3.5`

  Why this is correct

  In Python 3, the `/` operator performs true division and always returns a `float`, regardless of operand types. With `x = 7` and `y = 2`, the result is `3.5`, a floating-point number. This is a key difference from Python 2, where integer division with `/` would yield an integer. Here, the type is `float` and the value is `3.5`.

• ✗

  `int` with value `4`

  Why it's wrong here

  This option suggests rounding to the nearest integer, but Python's `/` does not round. It returns the exact floating-point result. Also, the type would be `float`, not `int`. Rounding would require a function like `round()`, and even then the type would remain `float` unless explicitly converted. Here, `7 / 2` evaluates to `3.5` as a float.

• ✗

  `int` with value `3`

  Why it's wrong here

  This option assumes that division of two integers yields an integer, truncating the decimal part. In Python 3, the `/` operator always returns a float, even when both operands are integers and the result is a whole number. The value `3.5` is not truncated, and the type is `float`, not `int`.

• ✗

  `float` with value `3.0`

  Why it's wrong here

  This option recognizes that the result is a float but incorrectly assumes the fractional part is discarded. Python's `/` operator does not truncate; it computes the exact quotient. For `7 / 2`, the exact quotient is `3.5`, not `3.0`. Truncation would require the `//` operator, which performs floor division and would yield `3` (an integer if both operands are integers).

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