Rus Articles Journal

Author of this task - Vladimir Igorevich Arnold, the academician, the teacher of MSU, at Mathematical institute of Steklov and at the French university Paris - the Dauphin. The task was published in its book “Tasks for Children from 5 to 15 Years“. In due time this book was very popular. Perhaps, it was even overlooked where - nibud at you on mezzanines.

The author of test results is Kirill Pokedov. “My Family“ No. 12/2012

Pass a Test:

## of Fig. 1

1. How many tourists live in this camp? Tells the number of spoons and plates on a skin about it. Of course, it can turn out that someone eats with hands from a palm or they could capture excess devices, but the most probable answer - four.

2. When they arrived? A few days ago. The spider managed to twist a web from a tree to tent. Of course, it can turn out that a web decorative...

3. On what they arrived here? By the boat. Tell the oars standing at a tree about it. Of course, it could turn out that they came by the car, and oars brought to ride an inflatable boat on the lake, but then why backpacks?

4. Whether it is far from camp to the next settlement? Nearby. About it chicken cackles. Of course, they could bring it with themselves in the boat, but whether is simpler to buy already wretched? It is much less efforts...

5. From where wind blows? From the South. Confirm a flag on tent it and a fire which flutter to the right side while on trees more dense kroner on the left side. Where kroner are more dense, there and the South. Of course, business could be in Australia or Brazil...

6. What now time of day? Morning. Look at a shadow from the boy with a serving spoon. It falls on the West, therefore, the Sun shines from the East. If, of course, business happens on the northern hemisphere...

7. Where Shura left? Two children are present at camp, therefore, two others left. One photographs, and the second catches butterflies (over bushes the net is visible). Near tent there is a backpack of which the support, on a backpack a letter “B“ sticks out. Possibly, with the camera the owner of a support, possibly a backpack belongs to the owner of the camera probably on a backpack the first letter of his name is removed, thus, it is not Shura. Then Shura catches butterflies. If, of course, he did not borrow the camera at Vasya...

8. Who was a person on duty yesterday? We look at the schedule at tent. Shura, as we know, catches butterflies, therefore, not he is on duty today. Vasya, as we know, photographs, the fellow digs in a backpack with a letter at the left “To“. Possibly, in the. It turns out that it - Pricking. There is Petya who costs with a serving spoon. Then, according to the schedule, Kolya was on duty yesterday. If, of course, it in the backpack digs. If, of course the owner of a backpack with a support photographs. If letters mean initials...

9. What is the date today what month? Follows from the previous answers that Petya is on duty today, according to the schedule its watch drops out on the 8th. Water-melons already ripened, therefore outside not July, but the foliage did not fall down also children not at school, therefore even not September yet. It turns out 8 - e August. Though, of course, they could go hiking also on Sunday 8 - go September, and business can be and in the south where at the beginning of September even summer... Well and, of course, if children in Brazil, then there is a February...

## of Fig. 2

10. Up or downstream there is a steamship? Wooden triangles on which beacons (beacons) are strengthened are always directed by a corner against the current. - The steamship floats up the river. Though, of course, it can reverse...

11. What season is represented here? In drawing the flock of birds is shown; they fly in the form of a corner, one its party is shorter another: these are cranes. Gregarious flight of cranes happens in the spring and in the fall. On the fringe of the forest it is possible to determine by crowns where the South: they always expand more densely on that party which is turned to the South. Cranes fly in the southern direction. - Means, in drawing the fall is represented. If, of course, business happens on the northern hemisphere...

12. Whether the river is deep in this place? The river in this place of a piece of chalk: the sailor, standing on a steamship nose, measures by a pole waterway depth. If, of course, it reaches to the bottom...

13. Whether far pier? Obviously, the steamship moors to pier: group of passengers, having taken things, was going to descend from the steamship. If, of course, they did not see a mirage...

14. On what coast there is a pier? Answering the first question, we defined in what party the river flows. To specify where right and where the left river bank, it is necessary to become, having faced on a current. We know that the steamship moors to pier. It is visible that passengers were going to come to that party from where you look at drawing, so the nearest pier is on the right river bank. If, of course, does not include in the plans of the captain right now to make a turn...

15. What time of day was shown in drawing by the artist? On beacons - lamps; put them before evening and remove early in the morning. It is visible that shepherds drive herd to the settlement. Having compared to
these two signs, it is necessary to come to a conclusion that in drawing the end of day is shown. If, of course, the shepherd did not forget to take a lunch from the house...