BEBRAS Selection

Art Scratch Paper is special. It is dark grey but has four colours hidden below. You can draw a pretty picture by scratching it with a sharp object. Question If using Art Scratch Paper, which of these drawings will show exactly three colours?

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A train system consists of four train lines that start at the stations: Acton, Bams, Chat, and Dinmore. John went to the Zoo. He changed train lines exactly once at Moor, Museum, Mart or Market. Question Which station did he start his journey from?

• Acton
• Bams
• Chat
• Dinmore

Anne is packing her bag for a football match. She needs to pack the shirt which does not have stripes and does not have black sleeves. It must have a black collar. Question Which shirt should Anne pack?

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It’s lunch time for Eddie the bird! The block code should take Eddie to the worm by the path that you see in the image below. But there is a mistake in the code! Which part of the block code contains a mistake?

• A
• B
• C
• D

In the parking lot below, cars can be parked either in the parking spaces or in front of these parking spaces. When a car wants to leave its parking space, any cars that are parked in front of it must move forward or backwards to let the car out. For example, in the image below: Car A is not blocked and can get out of its parking space. Car L is blocked by car M. Car M must move backwards before car L can get out of its parking space. Question Find the one car that can only get out if two cars move (either forward or backwards).

(a)  

A robot arm takes objects from three conveyor belts (A, B and C) and moves them to the processing conveyor belt (OUT). Here is how the robot arm works: • First it takes an object from A and moves it to OUT • Then it moves to B, takes an object from B and moves it to OUT • Finally, it does the same for C, before starting again at A When there is no object to pick up on a conveyor belt, the robot arm waits until one becomes available, because the processing unit needs one object from each conveyor belt to proceed. Question Given the situation shown in the picture, and knowing that no new objects will arrive on the conveyor belts (A, B and C), how many objects will be moved by the arm?

• 2
• 9
• 11
• 7

• A
• B
• C
• D

Crocodile families all have the same sequence of scales running down their spines. Cheryl and Charlie Crocodile belong to the same family and if they lose a scale, it can regrow. Question Of the pictured crocodiles, which ones could be in the same family as Cheryl and Charlie? (choose all that apply)

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There are 4 robot animals in a store.

One robot animal secretly walked around the store last night.

It left a trail of footprints on the floor.

Question

Select the robot who left the footprints.

• Bear robot

• Chicken robot

• Rabbit robot

• Cat robot

Three children often borrow books from the library.
The librarian wants to know which book has been borrowed most often. 
She uses the shapes on each child's library card to make a list of who borrowed which book.

Task:
Look at her list in the middle. Which book was borrowed most often?

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