If '×' stands for 'addition", "÷" stands for 'subtraction', '+' stands for 'multiplication' and '–' stands for 'division', then
120 + 12 – 3 ÷ 4 × 2 – 2 + 1 = ?

120 + 12 – 3 ÷ 4 × 2 – 2 + 1 = ?

120 × 12 ÷ 3 – 4 + 2 ÷ 2 × 1 = ?

= 120 × 4 – 4 + 1 × 1

= 480 – 4 + 1

= 481 - 4

= 477

Thus, the correct answer is (a).

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