Logic Worksheet - Grade 7/8, University Of Waterloo (Page 4 of 9) in pdf

Logic Worksheet - Grade 7/8, University Of Waterloo Page 4

Barbara

Eric

Fred

Marcia

1st

2nd

3rd

4th

Beagle

Dalmation

Collie

Greyhound

Exercises

1. Mr. Red, Mr. Blue and Mr. White meet for lunch at a restaurant. Under their

coats, there are each wearing a red, blue or white shirt. Mr. Blue says, ”Hey,

did you notice we are all wearing diﬀerent coloured shirts from our names? The

man wearing the white shirt says, ”Wow, Mr. Blue, that’s right!” Can you tell

who is wearing what colour shirt?

2. Two fathers took their sons ﬁshing. Each person caught one ﬁsh, but when

they returned to camp, there were only 3 ﬁsh. How could this be?

3. Place 10 balls in 5 lines such that each line has 4 balls in it.

4. You must cut a birthday cake into 8 pieces using exactly 3 straight cuts,

and you can’t move the pieces of the cake as you cut. How can you do it?

5. I have 8 real coins and 1 fake coin. All of the coins look the

same, but the fake coin is slightly heavier that the others.

If you have a balance scale, what is the least amount of

weighings you can do in order to ﬁnd the fake coin?

Logic Worksheet - Grade 7/8, University Of Waterloo Page 4