In the Additional Questions it asks for the minimum number of bits required to send a date in mm/dd format. The answer given is 9 and I keep getting 10. Same with the military time question … answer is 17 and I get 18. One off each time. What am I doing wrong?

Here’s my logic for the mm/dd format:

Throw out the “/”, just consider mmdd

The two options I considered were the dates of 1231 (the largest date with a digit in each position) which in binary is 1 10 11 1, 6 bits.

The other option was 0929. This is the date with the largest digits, taking the most bits. This is 1001 10 1001 in binary, 10 bits.

I cannot logic out the 9 bit answer…

Help and Thanks.