第四次\ 進制轉換 345(10) = ________ (2) = ________ (8) = ________ (16)

345/2=172 ......1
172/2=  86 ......1
86/2=    43 ......0
43/2=    21 .......1
21/2=    10 .......1
10/2=      5 .......0
5/2=        2 ........1
2/2=        1 ........0
→345(10) = 101011001 (2)
345(10) = 101011001 (2)


101/011/001
101(2)=2*2*1+2*0+1*1=5
011(2)=2*2*0+2*1+1*1=3
001(2)=2*2*0+2*0+1*1=1
→345(10)=531(8)


345(10) = 101011001 (2) = 159(16)
0001/0101/1001
0001(2)=2*2*2*0+2*2*0+2*0+1*1=1
0101(2)=2*2*2*0+2*2*1+2*0+1*1=5
1001(2)=2*2*2*1+2*2*0+2*0+1*1=9
→345(10)=159(16)