June 2024
©2024 University of Waterloo
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B | 5 | 9 | 9 | B | 4 | 5 | 5 | 2 |
7 | 2 | B | 1 | 1 | 3 | B | B | W |
B | 2 | B | B | 5 | B | 6 | 6 | 0 |
2 | 5 | B | 6 | 6 | 7 | B | 4 | B |
3 | B | 2 | 9 | B | 8 | 5 | B | 6 |
B | 2 | B | 1 | 5 | 9 | B | 3 | 1 |
2 | 6 | 4 | B | 1 | B | B | 8 | B |
3 | B | B | 1 | 0 | 1 | B | 5 | 8 |
7 | 4 | 4 | 8 | B | 9 | 6 | 1 | B |
Player | Player 1 | Player 2 | Player 3 | Player 4 |
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Answer |
Player | Player 1 | Player 2 | Player 3 | Player 4 |
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Player | Player 1 | Player 2 | Player 3 | Player 4 |
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Answer |
Since
Answer:
Since
Answer:
Solution 1
Since the area of
Solution 2
Since the area of
Answer:
If Antonio swam
Answer:
We start with the output, which is
Answer:
Since Alpha can see exactly
Beta’s Eyes | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
---|---|---|---|---|---|---|---|---|
Gamma’s Eyes | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
Since Beta sees
If Beta sees
Answer:
Solution 1
For every possible digit for
If
Solution 2
We know that the product of
After trying each pair of digits as
Answer:
First we draw the smallest possible rectangle around the frog, so
that the sides of the rectangle lie on grid lines. Then we move the
rectangle
If we move the rectangle
Answer:
First we will label the rocks as shown.
The turtle starts at rock
Since the score is even, the turtle will turn right, move forward to
rock
Since the score is odd, the turtle will turn left, move forward to
rock
Since the score is odd, the turtle will turn left, move forward to
rock
Since the score is even, the turtle will turn right, move forward to
rock
Since the score is even, the turtle will turn right, move forward to
rock
Since the score is even, the turtle will turn right, move forward to
rock
Since the score is odd, the turtle will turn left, move forward to
rock
Since the score is even, the turtle will turn right, move forward to
rock
Since the score is odd, the turtle will turn left, and try to move
forward, however since there is no path in front of it, the program will
crash. Thus, Ahmed’s score right before his program crashed was
Answer:
Since the blocks must all fit inside the box, then the total volume of all the blocks must be less than or equal to the volume of the box.
The volume of the box is
Given the dimensions of the blocks and box, can we actually fit
Then we stack two blocks directly on top of each of the four blocks.
This will create a
Answer:
We begin by labelling additional points, as shown, and then proceed with two different solutions.
Solution 1
One way we can approach this problem is to choose some values that satisfy the perimeters given.
If the perimeter of the shaded rectangle
Since
Therefore, the perimeter of the rectangle
Solution 2
Here we use variables to represent the unknown side lengths. Let
Since the perimeter of the shaded rectangle
Answer:
First we notice that there are
Since
Thus, the integer directly above
Answer:
Solution 1
Since the remainder is
Since the remainder is
If
Solution 2
Since the remainder is
Since
Answer:
Since
Next, we will find the values of
Answer:
The probability that the robot will reach the exit on the right
side of the maze depends entirely on which opening it moves through when
it sees
Notice that there are six squares in the maze where the robot must
choose between two openings. These have been labelled with the letters
There is exactly one path that the robot can take to reach the exit.
In order for the robot to follow this path, it must first turn left at
The robot must then turn right at
Finally, the robot must turn left at
Answer:
B | 5 | 9 | 9 | B | 4 | 5 | 5 | 2 |
7 | 2 | B | 1 | 1 | 3 | B | B | W |
B | 2 | B | B | 5 | B | 6 | 6 | 0 |
2 | 5 | B | 6 | 6 | 7 | B | 4 | B |
3 | B | 2 | 9 | B | 8 | 5 | B | 6 |
B | 2 | B | 1 | 5 | 9 | B | 3 | 1 |
2 | 6 | 4 | B | 1 | B | B | 8 | B |
3 | B | B | 1 | 0 | 1 | B | 5 | 8 |
7 | 4 | 4 | 8 | B | 9 | 6 | 1 | B |
The difference between
From the grid, the thousands digit is
A dozen is a set of
The value is
In
From the grid, the tens digit is
The area of the triangle is
The number of days is
The ones digit must be a
From the grid, the hundreds digit is
Since
The smallest
There are only two two-digit numbers whose digits
multiply to
From the grid, the thousands digit is
The digits in
From the grid the hundreds digit of this number is
From the grid, the ones digit is
Thus, the number is
From the grid, the ones digit is
The sum of the digits in
From the grid, the ones digit is
In 1 year there are
From the grid, the tens digit of this number is
Writing
From the grid, the hundreds digit is
From the grid, the hundreds digit is
From the grid, the ones digit is
From the grid, the ones digit is
From the grid, the hundreds digit is
The thousands digit must be
The perimeter is equal to
From the grid, the tens digit is
A rectangle with area 95 and width 5 has length
We start by considering clues (4) and (8):
Allie sat in seat A6.
Dita had chips and sat next to Allie.
From these clues, we can determine that Dita sat in seat A7.
Next we consider clues (6) and (7):
Five of the friends are Edison, Dita, Katja, Neeraj, and Vasilije. The other three friends are the person with the nachos, the person in seat A15, and the person with the pretzel.
The friends with the nachos and the licorice sat together, and were not in the front row.
Since Allie’s name is not mentioned in clue (6), it follows that she is either the person with the nachos, the person in seat A15, or the person with the pretzel. Since we know she is in seat A6, she cannot be the person in seat A15. From clue (7), we know the person with the nachos did not sit in the front row. Since Allie sat in the front row, it follows that she cannot be the person with the nachos, so she must be the person with the pretzel.
The following partially-completed seating chart contains the information we know so far.
Next we consider clues (2), (5), and (6):
The person with the chocolate bar sat in an aisle seat (i.e. the first or last seat in a row) and did not sit next to the person with the hot dog or the person with the popcorn.
Katja sat in an aisle seat next to her friend who had popcorn.
Five of the friends are Edison, Dita, Katja, Neeraj, and Vasilije. The other three friends are the person with the nachos, the person in seat A15, and the person with the pretzel.
Since Katja’s name is mentioned in clue (6), it follows that she is not the person in seat A15. Since we know she sat in an aisle seat, it follows that she sat in seat H1. Then from clue (5), we determine that the person who sat in seat H2 had popcorn.
From clue (2), we can determine that the person with the chocolate bar sat in seat A15, since it is the only remaining aisle seat that is not next to the person with the popcorn.
Next we consider clue (7):
The friends with the nachos and the licorice sat together, and were not in the front row.
Since seats K10 and K11 are the only remaining pair of seats whose snacks are unknown, it follows that the people who sat in seats K10 and K11 had nachos and licorice, in some order.
The following partially-completed seating chart contains the information we know so far.
Next we consider clues (1), (3), and (6):
Carlo sat next to Edison, who had gummy bears.
Yun sat in an even-numbered seat next to Vasilije.
Five of the friends are Edison, Dita, Katja, Neeraj, and Vasilije. The other three friends are the person with the nachos, the person in seat A15, and the person with the pretzel.
Since Carlo’s name is not mentioned in clue (6), it follows that he is either the person with the nachos, the person in seat A15, or the person with the pretzel. Since we know that the person with the nachos sat next to the person with the licorice, and from clue (1) Carlo sat next to the person with the gummy bears, it follows that Carlo cannot be the person with the nachos. Carlo also cannot be the person with the pretzel, because we know that Allie was the person with the pretzel. It follows that Carlo must be the person in seat A15. Then Edison sat in seat A14.
From clue (3), we can conclude that Yun sat in seat K10 and Vasilije sat in seat K11, since they are the only remaining pair of seats without names.
Since Vasilije’s name is mentioned in clue (6), it follows that he is not the person with the nachos. Then Yun must have had the nachos and Vasilije must have had the licorice.
Now we notice that all the names have been filled in except for the person in seat H2. From clue (6), we have not used the name Neeraj. We can conclude that Neeraj sat in seat H2.
Finally we consider clue (2):
The person with the chocolate bar sat in an aisle seat (i.e. the first or last seat in a row) and did not sit next to the person with the hot dog or the person with the popcorn.
The only remaining piece of information to fill in is the snack for the person in seat H1. From clue (2), we know that someone had a hot dog, however we have not assigned it to anyone. We can conclude that Katja in seat H1 had the hot dog, and confirm that she did not sit next to the person with the chocolate bar.
This completes the logic puzzle.
(Note: Where possible, the solutions are written as if the value of
P1:
P2: Sebastian made
Since the answer to the previous question is
P3: There are
Since the answer to the previous question is
P4: If Kiran will be
Since the answer to the previous question is
Answer:
P1: Since we are looking for the number of students with at least
one sibling, we add up the bars for
P2: In total, Safiya ran for
Since the answer to the previous question is
P3: If we remove the same shape from each side of the scale, it
will remain balanced. So, removing one and one
from each side leaves two
and one
on the left side, and one
on the right side. Thus, the mass of one
is equal to
Since the answer to the previous question is is
P4: The area of the shaded rectangle is
Since the answer to the previous question is
Answer:
P1: We are looking for a positive integer that is divisible by
both
P2: Of the five numbers we know, only
Since the answer to the previous question is
P3: Written in order from smallest to largest, the first four
fractions are
Since the answer to the previous question is
P4: If the input number is
Since the answer to the previous question is
Answer:
P1: In numeric form, the number is
P2: If the probability of choosing a yellow marble at random is
Since the answer to the previous question is
P3: The 4th term is equal to the sum of the
2nd and 3rd terms, which is
Since the answer to the previous question is
P4: The cost of
Since the answer to the previous question is
Answer: