Puzzles

1.	What number should replace the question mark? Answer  0. Sol. Looking at lines of numbers from the top : 9×8 = 72; 72×8 = 576; 576×8 = 4608;

2.	What number should replace the question mark? Ans: 17.Sol. It is the sum of the two digits(9 + 8) in the quadrant opposite.