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http://www.mysterymaster.com/puzzles/CreditCardShu...

The above one was asked a few days ago on Y/A. I shall not attach the actual question as my solution will be there and it will spoil your fun.

Alternatively click on theattached site and you can choose ones of differing difficulty levels.

http://www.printable-puzzles.com/printable-logic-p...

My favorite logical puzzle is the famous knights and knaves by Raymond Smullyan, he was a famous logical scientist some people would even say hes the forefather of logics. I found about logical puzzles in my discrete mathematics subject at my university(college) and Raymond Smullyan was mentioned many times.

Anywayz heres the link to the knights and knaves puzzle http://en.wikipedia.org/wiki/Knights_and_Knaves

He also had many others puzzles in the book he published called "Forever Undecided" so Google forever undecided puzzle in google or buy the book if you wish

Monday: Reads R, Eats T, hear MAT Tuesday: Reads ok, Eats B, hear SY Wed: Reads N, Eats J, hear LW Thurs: Reads P, Eats F, hear MB Friday: Reads D, Eats Mar, hear Moz