SOLVED: The octal numeral system is a base-eight positional system that uses the symbols 0, 1, 2, 3, 4, 5, 6, and 7. Write each base-eight number as a base-ten number. (Hint: Similar to this example.)(a) 15(b) 116Write each set using the listing method.(a) the set of integers from 2 through 10(b) the set of letters in the word set