On the left side of the room, Bea and Pia are sleeping with their heads on their pillows facings each other. On the right side of the room, Mary and Karen are sleeping with their pillows with their backs to each other. How many girls are sleeping with their right ear on their pillow ?

Tom and John build rectangular boxes using the same number of udentical cubes.

Tom’s box looks like this: 

The first level of John’s box looks like this: 

How many levels will John’s box have ?

Alice’s mother wants to see a knife on the right side of each plate and a fork on the left side. What is the least number of exchanges of a knife and a fork does Alice need to make in order to please her mother ?

Cathy draws a square of area 100 cm². She joins the midpoints of the sides to make a smaller square. What is the area of the smaller square ? 

On Lisa’s refrigerator 8 strong magnets ( the black circles in the picture ) hold some postcards.

What is the greatest number of magnets Lisa could remove so that no postcard falls to the ground ?

Starting with 555 groups each containing 9 rocks we pile all these rocks together into one pile. We then divide this new pile into groups with 5 rocks each. How many new groups do we get ?

Mike cuts a pizza into quarters. Then he cuts every quarter into thirds. What part of the whole pizza is one of the pieces ?

Ahmed starts counting at the number 19 and keeps counting until 89. If he takes one second to say each number how long does it take to count all the numbers ?

A centipede has 25 pairs of shoes. It needs one shoe for each of its 100 feet. How many more shoes does the centipede need to buy ?

A fly has 6 legs, a spider has 8 legs. Together, 3 flies and 2 spiders have as many legs as 9 chickens and several cats. How many cats are there ?

Alice has 4 pieces of this shape: . Which picture can she not make from these four pieces ?

Kalle knows that 1111 x 1111 = 1234321. What is the answer of 1111 x 2222 ?

There are 10 islands and 12 bridges, as depicted in the figure. All bridges are open for traffic right now. What is the smallest number of bridges that must be closed in order to stop the traffic between A and B ?

Martin wants to colour the squares of the rectangle so that 1/3 of all squares are blue and half of all squares are yellow. The rest of the squares are to be coloured red.

When the car wheels make one full rotation the car moves forward by about 1.8 meters. Approximately how many kilometres will the car move forward after 10,000 full rotations of the wheels ?