If 'A' means '+', 'B' means '-', 'C' means '$$ \times $$' and 'D' means '$$ \div $$', then find the value of (1 D 1 C 1) A (2 C 2 D 2) A (3 D 3 C 3) B (4 C 4 D 4).
according to question
$$ ( 1 \div 1 \times 1 ) + ( 2 \times 2 \div 2 ) + ( 3 \div 3 \times 3 ) - ( 4 \times 4 \div 4 ) $$
1 + 2 + 3 - 4 = 2
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