The digit in units place of the product 81 x 82 x ..... x 89 is
Select:
A) 0	B) 2	C) 6	D) 8	E) 9
Sol.   Required digit = unit digit in (1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9) = 0.   0nswer 0
<result>A</result>
The digit in units place of the product 81 x 82 x ..... x 89 is