work out the mathematical logic in this puzzle and say which numbers should replace the question marks. 4 2 4 ( 6 8 ) 4 9 6 ....... 7 7 6 ( 4 6 ) 8 2 4 ....... 8 1 1 ( ? ? ) 2 9 3 ...... I have tried this and can't figure it out. Can anyone help me please.