What would you insert instead of ???, so that the program checks for even numbers? if ???: print('x is an even number')

Question

Options

• Ax % "even" == True
• Bx % 2 == 1
• Cx % 2 == 0
• Dx % x == 0
• Ex % 1 == 2

• A
  16% (4)
• B
  4% (1)
• C
  72% (18)
• E
  8% (2)

Explanation

Option C (x % 2 == 0) is correct because the modulo operator % returns the remainder after division - dividing any even number by 2 always leaves a remainder of 0, making this the definition of "even."

Why the others fail:

• A (x % "even") is invalid syntax - you can't use modulo with a string.
• B (x % 2 == 1) is the check for odd numbers, not even ones.
• D (x % x == 0) always evaluates to True for any non-zero number (anything divided by itself has remainder 0), so it doesn't distinguish even from odd.
• E (x % 1 == 2) is impossible - the remainder when dividing by 1 is always 0, never 2.

Memory tip: Think "even → equal halves → remainder zero" - % 2 == 0 means the number splits evenly into two parts with nothing left over.

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