不明白的题

jennifer1979

how many bits of computer memory will be required to store the interger x, where x=负跟号下810,000, if each digit requires 4 bits of memory and the sign of x requires 1 bit?

a, 25

b, 24

c,17

d,13

e12

iamjames

答案是D嗎？ -810000開完根號是-900, 每一位數要4 bits,三個位數要12bits,負號要1bit, 所以是13bits. 應該到數學板塊討論的。