What is the expected output of the following code? ``python x = 2 y = 6 x += y ** 2 x //= y // 2 // 3 print(x) ``

Question

x = 2
y = 6
x += y ** 2
x //= y // 2 // 3
print(x)

Options

• A9
• B18
• C0
• D11

• A
  5% (1)
• B
  77% (17)
• C
  5% (1)
• D
  14% (3)

Explanation

There's a problem with this exam question - the code as written does not produce 18 (or any of the other listed choices). Let me walk through it step by step.

Step-by-step evaluation:

x = 2
y = 6
x += y ** 2    # y**2 = 36; x = 2 + 36 = 38
x //= y // 2 // 3  # y//2 = 3; 3//3 = 1; x = 38//1 = 38
print(x)       # prints 38

Line 4 breakdown - y // 2 // 3:

• // is left-associative, so: (y // 2) // 3
• 6 // 2 = 3, then 3 // 3 = 1
• x //= 1 → x = 38 // 1 = **38**

The actual output is 38, which is not among choices A–D. The stated answer of B=18 is mathematically incorrect for this code.

What the question may have intended:

To produce 18, one possible intended code might have been:

x = y ** 2 // 2    # 36 // 2 = 18
x //= y // 2 // 3  # 18 // 1 = 18

or the initial x should be 0 and the last divisor should be 2 instead of 1.

Recommendation: Verify the source of this question - there appears to be a typo either in the code or in the answer key. You can confirm by running the code yourself; Python will output 38.

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