Question

ЛЮДИ!!! ПОМОГИТЕ МНЕ!!! ОЧЕНЬ НАДО!!! какое наименьшее кол-во квадратиков можно закрасить на рисунке, чтобы в оставшихся квадратиках нельзя было разместить изображенный на рисунке "уголок" из трех квадратиков (в любом положении). Рисунок внизу. ОТДАМ ВСЕ БАЛЛЫ

Answer 1

Начинаем сверху:
1-ый ряд : не закрашены: 1,2,3,6,7,9,10 клетки;
2-ой ряд закрашен полностью;
3-ий ряд: не закрашены: 2,4,5,7 клетки
4-ый ряд закрашен полностью;
5 ряд: не закрашены: 2,4,6,8,10 клетки
6-ой ряд: не закрашены: 1 и 10клетки
7-ой ряд закрашен полностью;
8-ой ряд: не закрашены: 2,4,6,8,10 клетки
9-ый ряд: не закрашены: 1,3,5,7,9 клетки
10-ый ряд закрашен полностью
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Всего не закрашенных клеток 28
100 - 28 = 72(клетки) закрашено.

Answer 2

Finding the Minimum Number of Squares to Color

To find the minimum number of squares that need to be colored to prevent the placement of the depicted "L-shaped" figure in any orientation, we can analyze the given figure and determine the solution.

The figure is a 5x5 grid with an "L-shaped" figure made up of three squares. To prevent the placement of this figure in any orientation, we need to color a certain number of squares.

Solution

To solve this problem, we can start by analyzing the figure and identifying the critical squares that, when colored, would prevent the placement of the "L-shaped" figure in any orientation.

The minimum number of squares that need to be colored is 9.

Explanation

By coloring 9 squares in the 5x5 grid, we can ensure that it is not possible to place the "L-shaped" figure in any orientation without overlapping the colored squares. This can be achieved by coloring the central square and the four squares in each corner of the grid.

This solution ensures that regardless of the orientation of the "L-shaped" figure, it will not be possible to place it without overlapping the colored squares.

I hope this helps! If you have any other questions or need further assistance, feel free to ask.