If Q denotes ‘×’; R denotes ‘-‘; T denotes ‘÷‘; and W denotes ‘+‘; then –
20 R 12 T 4 Q 6 W 5 = ?
20 R 12 T 4 Q 6 W 5 ⇒ 20 – 12 ÷ 4 × 6 + 5 ⇒ 20 – 3 × 6 + 5 ⇒ 20 – 18 + 5 ⇒ 7
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