Hares found a log 6 m long in the forest. To take it home, they sawed it into pieces 1 meter long. How many cuts did they make?
Leaflet #plus_or_minus_one
Leaflet #plus_or_minus_one
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A piece fell out of the book, the first page of which has the number 35, and the last has 74. How many pages fell out?
Leaflet #plus_or_minus_one
Leaflet #plus_or_minus_one
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Now the hares already have several logs. They sawed all the logs, making 20 cuts, and got 27 logs. How many logs did the hares have?
Leaflet #plus_or_minus_one
Leaflet #plus_or_minus_one
Wikipedia
Logging
cutting, skidding, on-site processing, and loading of trees or logs onto transport vehicles
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The snail must climb a pole 10m high. Every day it rises 4m, and every night it slides down 3m. When will the snail reach its target if it started on Monday morning?
Leaflet #plus_or_minus_one
Leaflet #plus_or_minus_one
Wikipedia
Snail
common name for shelled Gastropods
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The main building of Moscow State University consists of several sectors. The highest tower with a spire is sector A, it is educational. Side sectors B and C adjoin it - dormitories for students. Floors in different sectors differ in height. Because of this, for example, it turns out that transitions from the 13th floor of sector A lead to the 19th floor of sectors B and C.
What is the ratio of the floor height of sector A to sector B?
Leaflet #plus_or_minus_one
What is the ratio of the floor height of sector A to sector B?
Leaflet #plus_or_minus_one
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How many times a day does the minute hand overtake the hour hand on the clock?
Leaflet #plus_or_minus_one
Leaflet #plus_or_minus_one
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What is an even number and what is an odd number? What is the number 0: even or odd?
Leaflet #parity
Wikipedia
Leaflet #parity
Wikipedia
Wikipedia
Parity (mathematics)
In mathematics, parity is the property of an integer of whether it is even or odd. An integer is even if it is divisible by 2, and odd if it is not. For example, −4, 0, and 82 are even numbers, while −3, 5, 23, and 69 are odd numbers.
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Bart tore the school wall newspaper into 3 parts. After that, he took one of the pieces and also tore it into 3 parts. Then again one of the pieces was torn into 3 parts, and so on. Could he end up with 100 pieces?
Leaflet #parity
Leaflet #parity
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On a chessboard on one of the cells stood the knight. He made several moves and returned to the same square. Did he make an even or odd number of moves?
Leaflet #parity
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Comments are available now. Feel free to share your feedback on problems.
Leaflet #parity
#news 🗞
Comments are available now. Feel free to share your feedback on problems.
Wikipedia
Knight (chess)
The knight (♘, ♞) is a piece in the game of chess, represented by a horse's head and neck. It moves two squares vertically and one square horizontally, or two squares horizontally and one square vertically, jumping over other pieces. Each player starts the…
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Numbers from 1 to 10 are written in a row:
1 2 3 4 5 6 7 8 9 10.
Is it possible to place + and − signs between them so that we get 0?
Leaflet #parity
1 2 3 4 5 6 7 8 9 10.
Is it possible to place + and − signs between them so that we get 0?
Leaflet #parity
YouTube
When zero was first discovered
The invention of zero, or rather the realisation that it was a number just like any other, was one of the greatest conceptual leaps in the history of mathematics, one that would spur the rise of modern science.
Today it is announced that the written record…
Today it is announced that the written record…
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