Puzzle 201
Trade Convention #2all logic puzzles
Workers with the surnames Butcher, Baker, Carpenter and Plumber are currently attending an annual convention.
No-one is currently, nor ever has been in the same profession as their name and no-one has had the same profession twice.
Alan is now a butcher, whereas Mr Brian Butcher used to be a baker.
The person who is now a carpenter used to be a butcher.
Charles has never been a baker, Mr Darren Carpenter has never been a butcher and Mr Baker is not now a carpenter.
Can you determine their full names, along with their current and previous professions?
Puzzle 202
Using exactly four straight lines, without taking your pen off the (virtual) paper, can you join all nine dots?

Note: this puzzle is not interactive, and cannot be clicked.
A Charming Puzzle, Twentieth Century Standard Puzzle Book, A. Cyril Pearson.
Puzzle 203
My local greengrocer is a would-be mathematician.
She likes to arrange the apples in nice rows.
When she lays the apples in rows of 3, she has one left over.
And, when she lays them in rows of 5, she also has one left over.
Remarkably, she also has one left over when she arranges them in rows of 7 and 9.
But 11 seems to be the magic number, because in rows of 11 there are no apples left over.
How many apples does she have?