If 'A' stands for '÷', 'B' stands for '×', 'C' stands for '+' and 'D' stands for '-', then what will come in place of the question mark (?) in the following equation? 13 B 2 C 6 D 8 A 4 = ?

Which two signs should be interchanged to make the given equation correct? 30 + 35 × 7 - 3 ÷ 10 = 5

If 'A' stands for '÷', 'B' stands for '×', 'C' stands for '+' and 'D' stands for '-', what will come in place of the question mark (?) in the following equation? 75 C 112 A 7 B 4 D 40 = ?

If 'P' stands for '×', 'Q' stands for '÷', 'R' stands for '-' and 'S' stands for '+', then what will come in place of the question mark (?) in the following equation? (60 Q 4) P 6 R 10 P 3 = ?

If '+' means '-', '-' means '×', '×' means '÷', and '÷' means '+', then what will come in place of the question mark (?) in the following equation? 18 × 9 ÷ 4 - 25 + 5 = ?

If 'I' stands for '+', 'J' stands for '×', 'K' stands for '÷' and 'L' stands for '-', then the result of which of the following mathematical expressions will be 49?

What will come in place of the question mark (?) in the following equation if '+' and '-' are interchanged and '×' and '÷' are interchanged? 19 + 17 - 21 × 7 ÷ 12 = ?

Which two numbers should be interchanged to make the given equation correct? 3 × (12 + 14 - 16) + (28 ÷ 7) × 3 - 10 - 21 = 1