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

. If, 4 × 3 = 14; 5 × 4 = 18; 6 × 5 = 22, then find the value of 7 × 6.

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 = ?

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

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

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 = ?

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

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

If 2 × 16 = 8; 8 × 8 = 1; 6 × 12 = 2, then 12 × 144 =?