Which is the length of (7424B) 16 in base 2? (a) 21. (b) 20. (c) 19. (d) None of the above. Which is

Which is the length of (7424B) 16 in base 2? (a) 21. (b) 20. (c) 19. (d) None of the above. Which is the length in base 2 of the sum of (100100110) 2 and (11100101)2? (a) 9. (b) 10. (c) 11. (d) None of the above. Which is the length in base 2 of the product of the binary numbers 11101 and 1101? (a) 8. (b) 9. (c) 10. (d) None of the above.