CricTrivia

What is the total number of runs scored since the first Test was played, and for how many wickets?

The total number of runs scored in the 1942 Tests played between March 1877 and December 30, 2009 (I'm writing this after the Boxing Day Tests in Melbourne and Durban), was 1,899,965. There had been 59,496 wickets, so that gives an average of 31.93 runs per wicket all told.

How often has a team scored 400 or more in its first innings yet gone on to lose the Test?

This has now happened on no fewer than 57 occasions in Tests. There have been 12 instances of a team scoring more than 500 in their first innings yet still losing, with the highest of all being Australia's 586 against England in Sydney in 1894-95, in the first Test ever won by a team who had to follow on. The most recent instance was also in Sydney: in January 2008, India scored 532 in their first innings but still went down to Australia by 122 runs.