[問題] Form16 Sec7-Q16

[sam6521]

How many bits of computer memory will be required to store the integer x , where x=-√810000 , if each digit requires 4 bits of memory and the sign of x requires 1 bit?

(A)25
(B)24
(C)17
(D)13
(E)12

Ans:(D)

[feebs79]

x=-900

each digit = 4 bits, so 900==> 3 digits , so 3digits x 4 bits= 12
sign '-' = 1 bit, so 12+1=13