This math puzzle is short, but it catches people who rush through it from left to right.
The expression is:
20 + 30 × 0 + 1
Use the standard order of operations: multiplication comes before addition.
First calculate:
30 × 0 = 0
Now the expression becomes:
20 + 0 + 1
That gives:
21
So the correct answer is 21.
The most common mistake is adding 20 + 30 first, but multiplication must be handled before addition. Another trap is seeing ×0 and thinking the whole expression becomes zero. Only the 30 is multiplied by zero.
Answer: 21.
