Nobody knows, skolkimi in the various ways it is possible to bypass a course of a horse all cages of a standard chessboard 8X8. Only one version of routes totals about one million variants. Usually at the decision of a problem on detour by a horse of cages of a chessboard are limited to consideration of the routes possessing unusual symmetry or (if board cages are renumbered as detour) generating a matrix with remarkable arithmetic properties. For example, the closed route on fig

The curve divides a plane on two parts: internal and external В».

Those who uses magic number 142 857 143, one danger traps: if the second factor shares on 7 product starts to "stammer" — in it there are repeating figures, and it gives rise to suspicion at spectators, that «business is not pure». To avoid "stutter", Wallace Li who has thought up set of excellent mathematical focuses, has suggested other magic number 2 857 143 (to see easy, that this all same magic number 142 857 143,

The surprising variant of game in it was offered by French mathematician Michel Enon: for game in a new version nima counters are required not, and... Scissors and cord scraps

22. There are plates of gold of identical test of two sizes: 10 and 20-dollar. That is more expensive: kg of 10-dollar plates or half-kg 20-dollar?

8. Imagine, that you are locked in a room, where (as well as on you) there is nothing metal, except two absolutely identical in appearance iron bruskov. One of bruskov is magnetised. To establish, which, it is possible, having suspended each of bruskov on a thread tied round the middle bruska: magnetised brusok will behave, as an arrow of a compass, that is to specify in the north

There is one more type of game, also applicable to all three versions pentamino. We name it В«Who?В» In game can participate from two to a couple - ^ reh players, but each of them plays only for itself. The winner the one who does last course is considered. To it 10 points are set off

— Whether awarded what-United States ' be mathematics of honour to be represented on post! Marks? — I have asked.

Points of crossing of the given straight line with an axis of co-ordinates it is multiple to this simple number.

Binturong (Arctictis binturong) — large enough (weight to fourteen kgs) a predator from family viverrovyh. It is extended in Indonesia and South East Asia. This night animal spending the most part of time on trees. Eats mainly fruits and fruit, but does not pass also small animals

It is necessary to descend to penguins, to examine their pond and to estimate, as as there it is possible to improve.

At first sight the problem seems idle time: it is necessary to adjust reliable protection of wild animals, and they will escape. But it sometimes is easier to tell, than to make. For now there is a struggle for such protection, it is necessary to accept — to create other safety measures in reserves and zoos a sufficient reserve of disappearing animals; then, if there will be the worst and these kinds will cease to exist on an ox, all of them will not be irrevocably lost. Moreover, the reserve will allow to select an issue in the future and again to settle a kind on its native land

My generosity has conceived immediate action. Africans were stuck by a wedge into thickets. Has not passed also five minutes as Filip, publishing triumphing cries of the feldfebelskoj glotkoj, has come up from bushes, pressing to a stomach beating off, kicking antelope. Having got again in a cage, it it is quiet vozzrilas on us innocent eyes, as if surprised with all this turmoil

Ache a find (a piece of a rotten banana, dry sheet, a flower bu-genvillei) which put in someone's bed, and very much was indignant, if we threw out it podnoshenie on a floor. So some months while I have not decided that is time to the Baby, as well as all other animals proceeded, to lodge in a cage. In that morning I have woken up from a painful pain. It appears, the squirrel tried to jostle to me in an ear a peanut

Sports. The l me at all were not tempted with fight over dvadtsatifutovoj thickness of muddy water with zverjugoj in weight in half-tons.

— Good morning, the sir, — has told Ogastin and poddernul bright sarong that it kept on lean hips is better.