Answer:
(a) 7316
(b) 10421
Step-by-step explanation:
Hexadecimal numbers can be converted to octal by first converting them to binary numbers then making a group of 3 binary bits starting from LSB moving towards MSB and if there are less than 3 bits add respective 0's and writing their corresponding octal numbers.
ECE=111011001110
111 011 001 110
7 3 1 6
Hence it's corresponding octal number is 7316.
1111=0001000100010001
000 001 000 100 010 001
0 1 0 4 2 1
Since the first number is 0 so we can remove it.
So the octal number is 10421.