Question
If '+' means '–', '–' means '×', '÷' means '+' and
'×' means '÷', then ' 30 – 12 + 20 × 10 ÷ 10 ' = (?)Solution
= 30 - 12 + 20 x 10 ÷ 10 = 30 x 12 - 20 ÷ 10 + 10 = 360 - 2 + 10 = 370 - 2 =  368 According to BODMAS, Answer is 368.
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