Endurance competition, rounds, elementary probability, C1.

[STEP III 2004 Question 13 (Probability and Statistics)]

Gossip, rumour, C1.

[STEP I 2001 Question 12 (Probability and Statistics)]

Gene, elementary probability, C1.

[STEP I 2000 Question 13 (Probability and Statistics)]

Trousers, ties and compromising photographs, elementary probability, C1.

[STEP II 1990 Question 16 (Probability and Statistics)]

Logic, body in fridge, enemy, truth and lies, probability, C1.

[STEP II 1987 Question 16 (Probability and Statistics)]

Tennis tournament, probability, draw, first, final round.

[STEP II Specimen Question 16 (Probability and Statistics)]