Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?
Lift glass F2 and empty in glass E5
You will get alternative glasses filled and empty.
EXCHANGE THE POSITION OF MIDDLE FILLED GLASS WITH THE MIDDLE EMPTY GLASS
There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle.
Where's the white house?
6 boys and 7 girls are available for a counselling.
In how many ways, we can arrange them in a row, if middlest one is a boy and girls are sat on both the corners?
Three rectangles are in a row, as shown below.
The first and second rectangles have a combined width equal to 7 m.
The second and third have a combined width equal to 8 m.
If the first rectangle has an area equal to 20 m2 and the third has an area equal to 25 m2, what is the area of the second rectangle?