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 =?

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 = ? 

By interchanging the given two signs and numbers which of the following equation will be correct?
 × and ÷, 7 and 9

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

By interchanging the given two signs and numbers which of the following equation will be not correct?
 × and ÷, 2 and 6
 I. 7 – 4 × 3 ÷ 6 + 2 = 8
 II. 6 – 8 × 2 + 9 ÷ 3 = 5