Posted by Anonymous on Thursday, October 25, 2012 at 9:05pm.
Yes. The digits always add up to 9.
9
18
27
36
and so on
?????????????? B.
The tens place in the product is in a pattern the pattern is 1,2,3,4,5,6,7,8 the ones place is the opposite the other pattern is 8,7,6,5,4,3,2,1