Practical quiz 2
第二次做，错都在二进制加法和减法。。
1.In pure binary numeration system, how many bits do we need to represent the decimal value of 12810?:
6
7
8 正确
9
正确 1 / 1 分
2.In pure binary numeration system, with n = 4 bits, how many different combinations can be represented?
8
7
15
16 正确 Correct!. 2^4=16.
正确 1 / 1 分
3.In pure binary numeration system, with n = 5 bits, we can represent any natural number between the values:
[0,15]
[-15,16]
[0,16]
[0,31] 正确 Correct. For n binary digits you can represent any natural number between 0 - 2^n-1. 正确 1 / 1 分
4.In pure binary numeration system, with n = 7 bits, how is represented the value 7410?.
Enter the 7-digit number without spaces. Example: 1010100
1001010 正确回答 正确 1 / 1 分
5.What is the radix-10 (decimal system) representation of the number 0101101012?.
Enter the number with 3 digits without spaces. Example: 212
181 正确回答 正确 1 / 1 分
6.What is the radix-16 (hexadecimal system) representation of the number 101101102?.
Enter the number with 2 digits without spaces. Example: A3
B6 正确回答 正确 1 / 1 分
7.What is the pure binary representation of the number in radix-16 (hexadecimal system) 8AB016?.
Enter the number with 16 digits without spaces. Example: 1011010100110010
1000101010110000 正确回答 错误 0 / 1 分
8.Given two natural numbers in binary representation, X = 01111102 and Y = 11101112 , what is the binary representation of X+Y?.
Enter the number with 8 digits without spaces. Example: 10010011
10110111 不正确回答 Show acceptable response 错误 0 / 1 分
9.Given two natural numbers in binary representation, X = 101101012 and Y = 11101112 , what is the binary representation of X - Y?.
Enter the number with 6 digits without spaces. Example: 101001
0111110 不正确回答 Review L0.1, starting in min 14:30 Show acceptable response 正确 1 / 1 分
10.Given two natural numbers in radix-16 (hexadecimal system) representation, X = A6B16 and Y = C4D16 , what is the radix-16 (hexadecimal system) representation of X+Y?.
Enter the number with 4 digits and no spaces. Example: A35B
16B8 正确回答