Logic Worksheet - Grade 7/8, University Of Waterloo (Page 2 of 9) in pdf

Logic Worksheet - Grade 7/8, University Of Waterloo Page 2

Family Names

Mary’s mom has four children.

The ﬁrst child is called April.

The second is May.

The third is June.

What is the name of the fourth child?

Measuring Cups

John Smith has two cups with no measuring markings

on them. He wants to measure out 4L of water, but

one cup holds 3L and the other holds 5L. He can ﬁll

each of the cups to the top, empty them out, or pour

from one cup into the other. Can you help him out?

The Two Hall Monitors

It is the ﬁrst day of school and you are trying to get to math class. There are two

hallways for you to choose from with two hall monitors standing in front of each one.

You can ask only one of them a yes or no question to try to ﬁgure out which hallway

leads to your class. The problem is, one hall monitor always tells the truth and the

other one always lies. What question can you ask in order to ﬁnd your classroom?

Right

Wrong

hallway

Honest

person

Liar

Crossing the River

Three althletes, Alex (whose coach is Liam), Ben (whose coach is Mike), and Carly

(whose coach is Nora), are trying to get across the river. None of the coaches trust

any of the other coaches to be with their athlete unless they are also there. They

have a boat that seats 2 people. How can they all get across?

Logic Worksheet - Grade 7/8, University Of Waterloo Page 2