HTML edition

It is here (and you can also click on the title above)

This will be updated with more exercises and any error-fixes.

15 August 2023 - Many minor fixes. Thanks to all those who submitted error reports - esp Tammie.
11 May 2023 - Many minor fixes. Thanks to all those who submitted error reports.
30 June 2022 - Many many minor fixes (and a few major ones). All chapters have exercises and solutions.
15 Oct 2021 - Minor spelling mistake in Ch6, and two minor errors in solutions for Ch5.
24 Sept 2021 - Moved some material on congruences from Ch9 to Ch5. Added minor text on pseudo random numbers.
12 September 2021 - initial public upload