E4 Looks like I'm going to have a victory here. The question was: "Can a human being drown in a pool of (hypothetically, room temperature) liquid oxygen?" And so far no one has given a correct answer except one person who half vaguely got it right. So before I start crowing all over the countryside, want to give it another try. (Yeah, yeah, Wiki it if you want.) Now begin by pressing the side of a blue pencil against the side of a yellow pencil, holding both pencils vertically. One centimetre of the pressed side of the blue pencil - measuring from its lower end - is smeared with paint. Hold the yellow pencil steady while sliding the blue pencil down one centimetre, continuing to press it against the yellow one. Return the blue pencil to its former position, and then slide it down one centimeter again. Go on in this manner until you've lowered the blue pencil five times and raised it five times - 10 moves in all. If, during this time the paint neither dries nor diminishes in quantity, how many centimetres of each pencil will be smeared with paint after the tenth move? DEAR MS (The longish problem was about an insect walking around a clock and blah blah blah till the crucial question was popped at the end. - MS) Clocking-The-Insect-Dept: Let the speed of the minute hand be Sm, which is 6°/min (360° in 60 min). Let the speed of the insect be Si. In 12 minutes, the insect covers 360° more than the minute hand; so 360/(Si - Sm) = 12. From this, we get Si = 36, which is the speed of the insect. Since the initial time was seven o'clock, the time taken for the first lap is 210/(Sm + Si) = 210/42 = 5 minutes. The total time taken is thus, 5 + 12 = 17 minutes. So, it is 7:17 when the insect meets the minute hand for the second time. -- Saifuddin S F Khomosi, firstname.lastname@example.org (The second was: "If the puzzle you solved before you solved the puzzle after you solved the puzzle you solved before you solved this one was etc etc etc. Yes or no?" - MS) Easier-Puzzles-Dept: The answer is yes. Label "this one" as P, and the one before as B. Take the first limb of the comparison (before the "was easier") and work backward. After three oscillations between P and B, it is B you are comparing. Similarly take the second limb and work backward. After oscillating twice, it is P you are comparing against. It simplifies as, "If puzzle B was easier than puzzle P, then B was easier than P". - Ramesh S Mahalingam, email@example.com The puzzle I solved before is easier than this one. The statement is correct. The trick lies in reading the question backwards. - Akshit Chaturvedi, firstname.lastname@example.org (The last problem was: "The boiling point of olive oil is higher that the melting point of tin. So how is it possible to fry things using a skillet made of tin?" - MS) Unboiling-Oil-Dept: Frying food in oil does not involve bringing the oil to its boiling point. Even if the pan could manage that heat, cooking at a temperature that high would ruin the flavour of the oil and the food. Even when deep-frying, the oil itself is not brought to its boiling point - it's the water in the food that boils. Deep-frying is usually done no hotter than 375 F. The boiling point of olive oil is about 570 F and that is only about 30 degrees short of its flash point. - Rachel Babu, email@example.com ENDGAME(S) 1. Fill letters into the brackets so as to generate two more words in each case. The letters when read in sequence must generate another word. The first is filled in to help you. Run (T) Rain; No ( ) Rite; Ant ( ) On; Rave ( ) Either; Sin ( ) Night; Cow ( ) Ice; Wag ( ) Very. 2. A 3280 kg stone breaks into several unequal pieces. However, the weights of the pieces are such that by combining any of them in any manner, any weight from 1 to 3280kg can be weighed using a balance. What is the minimum number of pieces and what do they weigh?
If the puzzle you solved before you solved the puzzle after you solved the puzzle you solved before you solved this one was easier than the puzzle you solved after you solved the puzzle you solved before you solved this one, was the puzzle you solved before you solved this one easier than this one? Yes or no?