What is the units digit of 6^m(2^7+1), for a positive integer m?
Choose the most appropriate option.
A) 1	B) 3	C) 4	D) 7	E) 0
Equation can be re-written as   6^m( 2^7 + 1)   =6^m ( 128 + 1)   =6^m (129)   Now, putting m= 0 ; Eqn = 129   putting m= 1 ; Eqn = 129. 6   putting m= 2 ; Eqn = 129 .36   putting m= 3 ; Eqn = 129 .216   We can see that there lies a pattern while multiplying 129 with multiples of 6 , units digit is always going to be 4   ANSWER:4
<result>C</result>
What is the units digit of 6^m(2^7+1), for a positive integer m?