There is its art. «The people capable proizvodiv in mind the most complicated calculations, apparently, are doomed to extinction, like natives of Tasmania or maorij-tsam, — with bitterness he has noticed. — therefore you can show the interest close to what is tested by anthropologists, observing a curious sample I disappear shchego a tribe of calculators. Perhaps, somebody from my listeners, having lived till 2000, can with gordostk tell:

One of the most surprising problems connected with drawing up of the big square from squares men-: shih the sizes, it has been offered by Richard B.Britgo-nom. Having read article Tatta about kvadrirovanii a square — its splitting into in pairs various squares, — It is smoothfaced has asked itself a question: whether it is impossible to break a square into smaller squares with the parties which length is expressed by consecutive natural numbers 1, 2,

14. The little boy starts up in a bath toy lodochku, gruzhennuju nuts and pieces of iron. That will occur to a water level in a bath if all cargo of a boat В«is dumped for a boardВ» as an unnecessary ballast: it rises or falls?

Problem 2. Put a cube on any field of a chessboard so that it has been turned upwards by any of the not red sides. Make on a board "round-the-world" travel (that is, rolling a cube from a cage on a cage, visit one time on all cages of a board and return on the same cage with which have begun)

For example, as points of "one circleВ» tops of the rectangle located on fig. 62 on the right below serve: through rectangle tops, as is known, always it is possible to spend a circle. Whether you can specify other three sets of points of "one circleВ»?

Kariamy, or seriemy (Cariama cristata) — very original birds from group of cranes. Kariamy (their two kinds) are extended only in the South America where occupy porosshie bushes and a high grass open spaces. Superficially resemble the African secretaries — long feet, short krjuchkoobraznyj a beak, a crest on a head. Eat small rodents, lizards, snakes, insects (in particular, a locust)

Once in the morning something has resulted me in our pavilion of reptiles. Passing by a cage stsinkov, I have glanced in it. As always, it seemed empty; tenants had a habit to be earthed and hours to sit out in minks. I already wished to leave, when have noticed any movement among dry leaves and a moss

The chapter the sixth LOVE And MARRIAGE

It was possible to remove a long stick it. Since then customs Freda have started to vary. That day, all is quieter. Completely to trust it for the present it is impossible, but anyway its enmity to people now poumerilas

First time Dalila it was quite happy with new apartment, but for the fourth month it hunting to change of places has seized. In frosty winter evening, having concluded, that the external world can give it something such that in a cage is not present, it has started the huge curve yellow teeth, has broken off them a thick wire grid, protisnula in a hole the portly body and has disappeared in night. Just this evening I have left on formal dinner party, therefore in successful carrying out of operation "Porcupine" all merit belongs to John

Hour through two road has got upwards, at the beginning it is hardly appreciable, doing wide loops. Over low young growth as if by miracle evolved green fountains, rose enormous treelike ferns. Above wood has started to give way to scraps of the savanna which have been burnt out by the sun.

— It there, in a hole? — With alarm has shouted Ogastin.