Prerequisite test results (21 answers 24.1.05)

4 fully correct answers

Sets (1 and 2): 
- list items: 17/21=81% 
- describe: 16/21=76%
Logical operations (3 and 4)
- formal: 18/21=86%
- meaning: 17/21=81%
Notations (Cartesian product) (5): 13/21=62%
Proof (induction) (6): 12/12=57%
Relations (7): 20/21=95%
Functions (8 and 9):
- diagram 14/21=67%
- meaning 11/21=53%
Inductive/recursive definition (factorial) (10): 11/21=53%
Antithesis (11): 9/21=43%
Countability (12): 14/21=67%

Mean of difficulty: 6.23 (0=very easy, 10=extremely difficult)

Most difficult: proofs, recursive definition, meaning of function