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Mar. 27th, 2007 09:19 amThe Economist, arguably the world's most prestigious magazine, продолжает радовать утверждениями из мира занимательной математики. В сегодняшнем выпуске:
A sphere can spin on an axis that runs, say, from north to south, or on each of two axes placed at right angles to this.
....
One problem addressed in the original book concerns counting soldiers. Sun Tzu's solution was that the soldiers should first split into groups of three, then groups of five, then groups of seven, with the number unable to join a group (in other words, the remainder) being noted each time. The three remainders can then be used to calculate how many soldiers are present. For example, if two were left over from the groups of three, three left over from the groups of five and two left over from the groups of seven, there would have been 23 soldiers in the unit (or possibly 233, but the difference should be obvious to even the stupidest commanding officer).
Я, честно говоря, думала, что даже Stupidest Economist Journalist может перемножить три однозначных числа, ну хотя бы с калькулятором, но, видимо, я ошибалась. Неплохая иллюстрация, кстати, к недавним дискуссиям о том, как надо учить умножению ( и надо ли ему учить вообще).
A sphere can spin on an axis that runs, say, from north to south, or on each of two axes placed at right angles to this.
....
One problem addressed in the original book concerns counting soldiers. Sun Tzu's solution was that the soldiers should first split into groups of three, then groups of five, then groups of seven, with the number unable to join a group (in other words, the remainder) being noted each time. The three remainders can then be used to calculate how many soldiers are present. For example, if two were left over from the groups of three, three left over from the groups of five and two left over from the groups of seven, there would have been 23 soldiers in the unit (or possibly 233, but the difference should be obvious to even the stupidest commanding officer).
Я, честно говоря, думала, что даже Stupidest Economist Journalist может перемножить три однозначных числа, ну хотя бы с калькулятором, но, видимо, я ошибалась. Неплохая иллюстрация, кстати, к недавним дискуссиям о том, как надо учить умножению ( и надо ли ему учить вообще).
