What is the unit digit in 7^105  Select.
A) 7	B) 0	C) 2	D) 3	E) 5
Explanation:   Unit digit in 7^105 = Unit digit in [ (7^4)26 x 7 ]   But, unit digit in (7^4)26 = 1   Unit digit in 7105 = (1 x 7) = 7   7
<result>A</result>
What is the unit digit in 7^105