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 balance the given equation.
 57 * 35 * 44 * 11 * 13 *74

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 78 * 43 * 2 * 56 * 27 * 4

By interchanging the given two signs and numbers which of the following equation will be correct?
 + and ×, 1 and 2

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

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

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 57 * 35 * 7 * 14 * 2 * 34

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

3 × 5 × 7 × 2 = 24, 2 × 4 × 6 × 8 = 22, 4 × 4 × 8 × 9 =?