2 November 2019
Posted by on
From New Scientist #3254, 2nd November 2019 [link] [link]
I keep an analogue clock by my bed. One afternoon, I had a nap. When I drifted off to sleep, the minute hand was pointing directly at one of the 12 numbers on the clock face, and the number of minutes past the hour was exactly the same as the angle (in degrees) between the hour and minute hands.
Later that day, when I woke up, I noticed the same was true again.
How long had I been asleep?
15 June 2014
Posted by on
From New Scientist #1345, 17th February 1983 [link]
“Can I help you, gentlemen?” The three brothers looked at each other.
“We’d like to buy some Wurst for tonight’s party,” offered Derek.
“Well, as you can see, I’ve got plenty of that,” replied the butcher, displaying a range of sausage marked at whole-number prices between 50 pence and 95 pence per pound, “So would you like to take your pick?”
After brief deliberation, Cedric chose some liver wurst, Derek went for a portion of the garlic, and Eric selected the pork. Now each portion weighed an exact number of ounces, and also (much to everyone’s amazement) cost in pounds and pence precisely what it weighed in pounds and ounces!
“I’ll pay for the moment,” said Eric, and handed the butcher a five pound note. The change he received was just two coins — what were they, and how much did each portion cost?