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 balance the given equation.
 17 * 11 * 42 * 2 * 7 = 18

Which two signs and two numbers should be interchanged in the following equation to make it correct?
 14 × 6 ÷ 12 + 15 − 9 = 203

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 16 * 4 * 8 * 10 * 2 *24

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

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 =?

Which two signs need to be interchanged to make the following equation correct?

9 + 3 − 4 ÷ 5 × 2 = 9

 By interchanging the given two signs and numbers which of the following equation will be not correct?
 × and –, 8 and 4
 I. 4 + 3× 8 – 2 ÷ 1 = 3
 II. 8 × 2 – 4 + 6 ÷ 2 = 11