Answer Is NOT 18? Math Puzzle Explained

Did you get it right?

This arithmetic puzzle asks: 42 – 6(3 + 2) = ? The trick is following the order of operations instead of rushing from left to right.

Answer Is NOT 18? Math Puzzle Explained

The Answer

The correct answer is: 12.

Here is why

  1. 3 + 2 = 5
  2. 6 x 5 = 30
  3. 42 – 30 = 12

Why people miss it

Many people subtract too early. Parentheses and multiplication must be handled before the final subtraction.

What answer did you get before checking?