2020 Beaver Computing Challenge
(Grade 5 & 6)
Questions
2020 Beaver Computing Challenge
(Grade 5 & 6)
Questions
Ren is allowed to bring one of his four teddy bears to school.
Ren brings the bear that has a star on one of its feet, and is wearing a scarf or a bow, but not glasses.
Which bear did Ren bring to school?
Whenever a customer orders soup, a bowl is taken from the top of the stack shown.
What is the fewest number of soup orders that need to be filled so that three identical bowls are used?
A family went for a walk. They started from their home and walked along some paths, eventually returning home. They did not walk on any path more than once.
During their walk they saw exactly four birds. Three of the four birds they saw are shown below:
Which other bird must they have seen?
Colby wants to take a picture of a rare mushroom. To determine whether or not a mushroom is rare, Colby assigns points to the stem and cap according to the following tables:
| Picture |  |
 |
|---|---|---|
| Type of Stem | Plain | Layered |
| Points | 0 | 2 |
| Picture |  |
 |
 |
|---|---|---|---|
| Type of Cap | Dotted | Horned | Striped |
| Points | 1 | 3 | 4 |
A mushroom that scores 5 points or more is rare and a mushroom that scores less than 5 points is not rare.
Which one of the following four mushrooms is rare?
A robotic arm takes packages from three conveyor belts (labelled A, B, and C) and moves them to the conveyor belt labelled OUT. The rules for the robotic arm are as follows:
If there is a package on belt A, take one and move it to belt OUT. Then,
if there is a package on belt B, take one and move it to belt OUT. Then,
if there is a package on belt C, take one and move it to belt OUT. Then,
move to belt A and start again.
If the robotic arm is ready to take a package from a particular belt, but no package is available there, the robotic arm will shut down.
Given the arrangement of packages on the three belts as shown, how many packages will the robotic arm move before shutting down?
A skyline consists of 14 towers as shown. The height of a tower is measured from the bottom of its base to its highest point, including any flagpoles or antennas.
If the towers are listed from shortest to tallest, which tower would be 10th in the list?
A beaver goes to a market to trade items. It has one carrot
but needs one fir tree 
.
Each stall of the market allows a different trade as shown:
| Stall | Give | Get |
|---|---|---|
| \(P\) | |
 |
| \(Q\) |  |
|
| \(R\) |  |
 |
| \(S\) | |
|
| \(T\) | |
|
| \(U\) | |
|
| \(V\) | |
|
| \(W\) | |
 |
Which of the following sequences of stalls should the beaver visit in order to trade its carrot for one fir tree ?
Beaver homes are identified using symbols rather than digits according to the table shown:
The symbol assigned to a row and the symbol assigned to a column are combined to form a new single symbol. This symbol represents the digit where that row and column meet.
For example, the symbol 
represents the digit 5, since it is a combination of its row symbol 
and its column symbol 
.
Here is a picture of one beaver’s home:
What four-digit number is represented by the symbols on this beaver’s home?
A new museum with seven rooms has been constructed. The builders are now trying to decide where to place the doors between rooms, so that visitors can enter, walk through the rooms, and exit.
The following possible layout of doors shows how guests might walk through the museum. Notice that some rooms are visited multiple times.
In an ideal layout, guests should be able to visit each room without having to walk through any room more than once.
Which one of the following layouts makes it possible for guests to tour the museum by visiting each room exactly once?
