This math puzzle is designed to catch anyone who works from left to right without using the order of operations. The expression is 22 + 18 × 0 + 9.
Multiplication comes first, so calculate 18 × 0. That equals 0. The expression then becomes 22 + 0 + 9.
Answer: 31.
The multiplication-by-zero step only affects the 18 × 0 term. It does not erase the other numbers in the expression.
Once that is done, the final step is simply 22 + 9 = 31.
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