What is the last digit in the product (3^65 x 6^59 x 7^71)	Choose the correct choice from the following options: A) 5 B) 6 C) 4 D) 8 E) 9
Explanation:   Unit digit in 34 = 1 Unit digit in (34)16 = 1   Unit digit in 365 = Unit digit in [ (34)16 x 3 ] = (1 x 3) = 3   Unit digit in 659 = 6   Unit digit in 74 Unit digit in (74)17 is 1.   Unit digit in 771 = Unit digit in [(74)17 x 73] = (1 x 3) = 3   Required digit = Unit digit in (3 x 6 x 3) = 4.   Answer is 4
<result>C</result>
What is the last digit in the product (3^65 x 6^59 x 7^71)