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

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

If 10 – 3 = 12, 12 – 4 = 13, 14 – 5 = 14, then 16 – 6 = ?

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 91 * 15 * 5 * 18 * 37

By interchanging the given two signs which of the following equation will be correct?
 × and +

After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively?
× and ÷, 7 and 9

I. 8 × 3 ÷ 6 + 9 – 7
II. 9 – 7 × 1 + 6 ÷ 3

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 25 * 5 * 10 * 2 * 13

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

3 × 4 × 5 = 435

4 × 3 × 2 = 342

2 × 3 × 4 = ?

What will come in the place of ‘?’ in the following equation, if ‘×’ and ‘ – ‘ are interchanged and also ‘+’ and ‘÷’ are interchanged?
 27 × 8 − 3 ÷ 4 + 2 = ?