不明白的题-->pumpkin转移

tiger1234

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?

跟号下810,000 就是 900, 那每个数字要4bits, 就是12bits, 再加上减号就是13