1912-2011
Median interval would be approximately 3-8 years.
An interval of 300 years.
75 to 76 years
2 years.
4 years.
1893456000 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.
In every 2 years
To write "I am 34 years old" in French, you would write "J'ai 34 ans."
It isn't known, but it probably would not have taken years to write.
it comes in interval of 76 years.
about 100 years
Depending on the number of leap years in the 7-year interval (1 or 2), the answer is 61,344 or 61,368 hours.