Puzzle 1
Which of the shapes is identical to the first one?
There might be more than one.
Puzzle Copyright © Robert A. Hartmann
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Hint
Try to rotate them around in your head, but watch out for mirror images.
Puzzle 2
What do you get if …
… you add 2 to 200 four times?
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Hint
Try it once, and then try it again.
Answer
You get 202 each time!
Puzzle 3
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?
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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 4
In Farmer Donald's hay loft there are a number of ants, mice and chickens.
There are ten times as many ants as there are mice, and there are four times as many mice as there are chickens.
Altogether there are 1,806 feet.
How many chickens are there?
Puzzle Copyright © Kevin Stone
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Hint
Think about the number of legs.
Answer
There are 7 chickens, 28 mice and 280 ants.
Reasoning
For every chicken (2 legs) we have 4 mice (16 legs) and 40 ants (240 legs) = 258 legs.
So we can divide the total number of legs by 258, giving 1,806 ÷ 258 = 7 (chickens).
