3
1 year=72hr. or 3 days
72 hours are 4320 minutes; 2599200 seconds; or 3 days.
plan B
The easiest would be look it like this, there is 24hr in a day so if it was 7am Wednesday 24hr (1 day) = 7am Thursday 48hr (2 Days) = 7am Friday 72hr (3 days) = 7am Saturday
Visit Beijing for 72hr without visa is now available for transit passengers from 45 countries covering the US, Canada and all members of the EU. Visa-free policy permit transit passengers have visas and plane tickets to a third country to transit through Beijing for a visa-free stay of up to 72hr, aiming to encourage tourism for transit passengers. Sinotour.com.cn offers well-planned Beijing packages with or without hotels for transit passengers as well as business travelers, ranging from layover in Beijing to 3 days packages.
May has 31 days.
Neither one makes sense, but "How many days are you?" is grammatically correct.
24 days
There are seven days in a week.
There are 99991416 days in 1416 days.
There are 365 days in 365 days.
There are 321 days in 321 days.