TLso 42 q34

David used white and red cubes to form a solid shape as shown in the picture.

The outer layer consists of white blocks, and the inside is filled with red blocks.

How many red cubes did David use?

Robert made a tunnel using some identical cubes (fig.1).

When he got bored, he rearranged the tunnel into a complete pyramid (fig.2).

How many cubes from the original tunnel did he not use for the pyramid?

• 34

• 22

• 18

• 15

A rectangular box is formed from 4 different colored blocks.

Each block contains exactly 4 small cubes of the same color.

What does the white block look like?

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Malte has built a bar of 27 bricks.

He breaks the bar into two bars such that one of them is twice the length of the

other.

Then he takes one of the new bars and breaks it the same way.

He continues in this way.

Which of the following bars will he not be able to get?

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Loes looks at the pyramid from above.

What does Loes see?

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A standard dice has 7 as the sum of the dots on opposite faces.

The dice is put on the first square as shown and then rolls towards the right.

When the dice gets to the last square, what is the total number of dots on the

three faces marked with the question marks?