QUESTION 264 What is the expected output of the following code? num = '7' * '7' print(num)

Question

Options

• A7777777
• BThe code is erroneous.
• C49
• D77

• A
  13% (5)
• B
  77% (30)
• C
  3% (1)
• D
  8% (3)

Explanation

Option B is correct because Python does not support multiplying two string objects together - '7' * '7' raises a TypeError: can't multiply sequence by non-int of type 'str', making the code erroneous.

Why the distractors fail:

• A (7777777) would be correct if the right operand were an integer: '7' * 7 repeats the string seven times. But '7' is a string, not an integer, so repetition is impossible.
• C (49) assumes both operands are treated as numbers (7 × 7 = 49), but Python does not silently coerce strings to integers in arithmetic operations.
• D (77) might seem like simple string concatenation, but * is not the concatenation operator - + is ('7' + '7' gives '77').

Memory tip: Think of Python's * with strings as "string × integer = repetition." The rule is exactly one side must be an int - two strings, two ints with * on strings, or any other combo is a TypeError.

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