Challenge 3: REPL Exploration — Possible Solution
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$ python3
>>> 7 * 6
42
>>> "Py" + "thon"
'Python'
>>> 10 / 3
3.3333333333333335
>>> len("hello")
5
>>> "ab" * 3
'abababab'
>>> exit()

WHAT EACH ONE RETURNED
------------------------------
7 * 6 -> 42 — ordinary arithmetic, evaluated immediately with no
print() needed, since the REPL automatically displays the result of
any expression typed at the prompt.

"Py" + "thon" -> 'Python' — the + operator concatenates strings
directly; note the REPL displays string results with quotes around
them (unlike print(), which would show Python with no quotes) — a
genuine, useful REPL-specific detail to notice.

10 / 3 -> 3.3333333333333335 — division with / always produces a
float result in Python 3, even when dividing two whole numbers,
unlike some other languages where integer division truncates by
default.

len("hello") -> 5 — a built-in function call, showing the REPL works
identically for function calls as it does for plain expressions.

"ab" * 3 -> 'abababab' — multiplying a string by an integer repeats
it that many times, a genuinely different (and, for many languages,
unexpected) meaning for * when applied to a string instead of two
numbers.

WHY THIS WORKS AS AN ANSWER
------------------------------
Each expression is evaluated immediately at the prompt with no print()
call needed and no script file created — exactly this chapter's point
about the REPL being a quick scratchpad, distinct from writing and
running a .py file. Picking a mix of arithmetic, string operations,
and a function call demonstrates the REPL handles all of these
identically, with its result auto-displayed each time.