the units digit of ( 35 ) ^ ( 87 ) + ( 93 ) ^ ( 53 ) is :
the units digit of powers of 3 , cycles in a group of 4 : { 3 , 9 , 7 , 1 } 53 has the form 4 k + 1 , so the units digit of 93 ^ 53 is 3 . the units digit of powers of 5 is always 5 . 3 + 5 = 8 , so the units digit is 8 . the answer is d .
add(reminder(multiply(reminder(53, const_4), 93), const_10), reminder(35, const_10))