what is the remainder when 2 ^ 20 is divided by 10 ?
"2 ^ 20 = 2 ^ 10 x 2 ^ 10 and 2 ^ 10 = 1024 4 * 4 = 16 , so the unit digit of this multiplication is 6 the remainder is 6 answer : d"
subtract(divide(10, const_2), multiply(2, 2))