If 'A' denotes '×', 'B' denotes '÷', 'C' denotes '-' and 'D' denotes '+', then find the value of 20B5D12C3A4.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 4
Replace each letter by the sign it stands for, then work out the expression in the usual order: division and multiplication before addition and subtraction (BODMAS).
With the signs in place: \(20\div5+12-3\times4\)
Division and multiplication first: \(4+12-12\)
Then addition and subtraction from left to right: \(16-12=4\)