In Work Rules!, Bock mentions briefly the GLAT (Google Labs Aptitude Tests) that were also mentioned in David Vise’s Google Story. But he just quickly says they may have been overused and sometimes a waste of time and of resources. But let me refer to his page 73:
That page begins with the image above which can be also found on google blog’s page Warning: we brake for number theory. It’s never too late solve math problems… If you solved it at the time, you got access to the following one:
The second puzzle:
f(1)=7182818284
f(2)=8182845904
f(3)=8747135266
f(4)=7427466391
f(5)= __________
Again feel free to try… you will find answers here. Bock just adds this: The result? We hired exactly zero people.
Maybe this will help you:
2.71828182845904523536028747135266249
7757247093699959574966967627724076630
3535475945713821785251664274274663919
3200305992181741359662904357290033429
5260595630738132328627943490763233829
8807531952510190115738341879307021540
8914993488416750924476146066808226480
0168477411853742345442437107539077744
9920695517027618386062613313845830007
5204493382656029760673711320070932870
9127443747047230696977209310141692836
8190255151086574637721112523897844250
5695369677078544996996794686445490598
7931636889230098793127736178215424999
2295763514822082698951936680331825288
6939849646510582093923982948879332036
2509443117301238197068416140397019837
6793206832823764648042953118023287825
>0981945581530175671736133206981125099
as well as this:
x = 1
2.71828182845904523536028747135266249
7757247093699959574966967627724076630
3535475945713821785251664274274663919
x = 2
2.71828182845904523536028747135266249
7757247093699959574966967627724076630
3535475945713821785251664274274663919
x = 3
2.71828182845904523536028747135266249
7757247093699959574966967627724076630
3535475945713821785251664274274663919
x = 4
2.71828182845904523536028747135266249
7757247093699959574966967627724076630
3535475945713821785251664274274663919
x = 5
2.71828182845904523536028747135266249
7757247093699959574966967627724076630
3535475945713821785251664274274663919
3200305992181741359662904357290033429
5260595630738132328627943490763233829
8807531952510190115738341879307021540
8914993488416750924476146066808226480
0168477411853742345442437107539077744
9920695517027618386062613313845830007
5204493382656029760673711320070932870
9127443747047230696977209310141692836
8190255151086574637721112523897844250
5695369677078544996996794686445490598
7931636889230098793127736178215424999
2295763514822082698951936680331825288
6939849646510582093923982948879332036
2509443117301238197068416140397019837
6793206832823764648042953118023287825
0981945581530175671736133206981125099