By interchanging the given two signs which of the following equation will be not correct?
 – and × 

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 37 * 3 * 21 * 79 * 18 * 4 * 19

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 25 * 4 * 6 * 2 * 17

If ‘+’ means ‘÷’, ‘ ̶ ’ means ‘+’, ‘×’ means ‘ ̶ ’ and ‘÷’ means ‘×’, what will be the value of the following expression?
 [{(32 × 20) - (2 ÷ 3)} + (2 - 4)] ÷ 3

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
 57 * 35 * 44 * 11 * 13 *74

If ‘A’ denotes ‘+’, ‘B’ denotes ‘×’, ‘C’ denotes ‘–’ and ‘D’ denotes ‘÷’, then what will come in place of ‘?’ in the following equation?
 71 A 3 B 2 C 6 B (65 D 13) C 7 B4 =?

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
20 * 2 * 50 * 5 * 115

Which of the following interchange of mathematical signs would make the given equation correct?
 20 ÷ 4 × 8 + 16 − 15 = 11