Puzzle 13
If cat and a half can catch a mouse and a half in a day and a half how many mice can 3 cats catch in 3 days?
workings
hint
answer
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Hint
How many mice does one cat catch?
Answer
Six mice.
1.5 cats catch 1.5 mice in 1.5 days.
so
1 cat catches 1 mouse in 1.5 days.
1 cat catches 2 mice in 3 days.
Therefore
3 cats catch 6 mice in 3 days.
Puzzle 14
Which is heaviest …
a pound of feathers
a pound of wood
a pound of steel
workings
hint
answer
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Hint
Imagine a set of scales.
Answer
They are all the same!
Puzzle 15
What is made from nothing …
… yet you can see it?
workings
hint
answer
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Hint
Think about it carefully.
Answer
A hole, or a shadow.
Puzzle 16
What always weighs the same …
… no matter how large it is?
workings
hint
answer
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Hint
There are at least 4 answers that fit the question.
Answer
A hole or a vacuum, or perhaps a set of scales, or maybe a shadow.
