This math puzzle looks simple, but the correct answer depends on following the order of operations.
The expression is:
21 − 7 × 0 + 2
Multiplication comes first:
7 × 0 = 0
Now complete the remaining calculation:
21 − 0 + 2 = 23
The ×0 only affects the 7 it is multiplying. It does not make the entire expression equal zero.
Answer: 23.
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