Convert the following hexadecimal numbers to binary:

(a) 23D

(b) BC9

(c) 9BC8

Convert the following binary numbers to hexadecimal:

(a) 10011011101

(b) 1111011101011011

(c) 11010111010111

Convert the following octal numbers to decimal:

(a) 257

(b) 3527

(c) 123

(d) 605.12

Convert the following hexadecimal numbers to decimal:

(a) A6

(b) A13B

(c) 3A5