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In the second picture above there are $4$s at the left of the red dice and on the right of the green dice and there are $3$s on the left of the green dice and the right of the white dice. The numbers on the seven faces that can be seen are then added and make $23$.
Each line of dice must be along or up a wall (or two walls). A line going up is counted the same as a line going along. Remember the dice must touch face to face and have the same numbers touching. The dice must be all in one line, so this arrangement below is not allowed:
Dice in a Corner
Age 7 to 11
Challenge Level 
Three dice are sitting in the corner with the simple rule that where two faces touch they must be the same numbers.
So, in the first picture above there are $3$s at the bottom of the red dice and on the top of the middle green and there are $4$s on the bottom of the green dice and the top of the white dice. The numbers on the seven faces that can be seen are then added and make $21$.
So, in the first picture above there are $3$s at the bottom of the red dice and on the top of the middle green and there are $4$s on the bottom of the green dice and the top of the white dice. The numbers on the seven faces that can be seen are then added and make $21$.
In the second picture above there are $4$s at the left of the red dice and on the right of the green dice and there are $3$s on the left of the green dice and the right of the white dice. The numbers on the seven faces that can be seen are then added and make $23$.
Use your own dice (you could use two or three or more...)
What total have you made?
Can you make a different one?
How many different ones can you make?
Now for a challenge - arrange dice (using at least $2$ and up to as many as you like) in a line in the corner, so that the faces you can see add up to $18$ in as many ways as possible.
Each line of dice must be along or up a wall (or two walls). A line going up is counted the same as a line going along. Remember the dice must touch face to face and have the same numbers touching. The dice must be all in one line, so this arrangement below is not allowed:
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