1. Some equations have been solved on the basis of a certain pattern. Find the correct answer for the unsolved equation on that basis: 7*4*3 = 437 8*6*4=648 4*3*6=?
4. In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation. 7x6x8=678 8x9x7=987 6x5x7=567 5x4x6=?