A blonde calls her husband on his cellphone. Blonde: "I've got a problem!" Husband: "Tell me." Blonde: "I've just bought a puzzle, but I can't solve it!" Husband: "Is it that difficult?" Blonde: "Yes, I don't know where to start; all pieces look similar!" Husband: "What's the image on the cover of the box?" Blonde: "A red cock, but I really can't solve it." Husband: "Wait a minute; I'll be right there and then we will solve it together!"
... A few minutes later the husband walks in. Husband: "And where is this puzzle of yours?" Blonde: "It's right here on the table..." Deep silence falls, and then a sigh... Husband: "Okay, we will do the following: you'll put all cornflakes back into the box and I'll forget the complete incident."
You drive a bus from Rotterdam to Delft.
At the first bus stop, 33 people get in.
At the second bus stop, 7 more people get in, and 11 passengers step off.
At the third bus stop, 5 passengers step off and 2 people get in.
After one hour, the bus arrives in Delft.