In hexadecimal, A represents 10. Thus, 1*16^1 + 10*16^0 = 16 + 10 = 26.

In octal, 77 = (7*8^1) + (7*8^0) = 56 + 7 = 63.

15 divided by 2 repeatedly gives 1111 in binary.

Group binary bits in threes from right: 101 and 010. 101 = 5, 010 = 2. Result is 52.

Octal system uses base 8, consisting of digits 0, 1, 2, 3, 4, 5, 6, and 7.

1111 = F in hex. 11111111 = FF.

20 divided by 16 is 1 with a remainder of 4. So, 14.

One hexadecimal digit ranges from 0 to F (0 to 15), which requires 4 bits (2^4 = 16).

In hexadecimal, the letters A, B, C, D, E, F represent decimal values 10, 11, 12, 13, 14, and 15 respectively.

1011 + 0110 = 10001 in binary (11 + 6 = 17 in decimal).

25 divided by 8 is 3 remainder 1, so 31 in octal.

Each F in hex is 1111 in binary, so FF is 11111111.

Octal 12 is 10 in decimal, which is A in hexadecimal.

Octal 5 is 101 and 4 is 100, so 54 is 101100.

Split 110101 into 0011 and 0101. 0011 is 3 and 0101 is 5.

1011 binary = 11, 12 octal = 10, A hex = 10, 10 decimal = 10. 11 is the largest.

Any base-n system has exactly n digits (0 to n-1).

10 hex is 16 decimal. 16 decimal in octal is 20 (2*8 + 0).

A=10, B=11, C=12, D=13.