what number is obtained by adding the units digits of 734 ^ 99 and 347 ^ 83 ?
the units digit of 734 ^ 99 is 4 because 4 raised to the power of an odd integer ends in 4 . the units digit of 347 ^ 83 is 3 because powers of 7 end in 7 , 9 , 3 , or 1 cyclically . since 83 is in the form 4 n + 3 , the units digit is 3 . then 4 + 3 = 7 . the answer is a .
subtract(subtract(99, 83), divide(99, add(const_1, const_10)))