Puzzle 349
Which is heaviest...
a pound of feathers
a pound of wood
a pound of steel
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Hint
Imagine a set of scales.
Answer
They are all the same!
Puzzle 350
Here is a well known proverb with the consonants removed. What is the proverb.
A -i-- i- --e -a-- i- -o--- --o i- --e -u--.
Puzzle Copyright © Kevin Stone
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Hint
The seventh word is WORTH.
Answer
A bird in the hand is worth two in the bush.
Puzzle 351
Using a 3 gallon container and a 7 gallon container (along with a water source and drain)...
...can you measure exactly 5 gallons?
Puzzle Copyright © Kevin Stone
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Answer
Here are the contents of the containers after each stage:
A B
0 7 fill B
3 4 fill A from B
0 4 empty A
3 1 fill A from B
0 1 empty A
1 0 fill A from B
1 7 fill B
3 5 fill A from B
0 5 empty A
This leaves 5 gallons in container B.
Puzzle 352
Are there more millimetres in a mile or...
...sixteenths of an inch in 2 kilometres?
Puzzle Copyright © Kevin Stone
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Answer
Millimetres in a mile.
Reasoning
One inch = 25.4mm.
So:
1 mile = 1760 yards = 1760 x 3 feet = 1760 x 3 x 12 inches = 1760 x 3 x 12 x 25.4 millimetres = 1,609,344mm in 1 mile.
And:
2 kilometres = 2000 metres = 2000 x 100 centimetre = 2000 x 100 x 10 millimetres = 2000 x 100 x 10 ÷ 25.4 inches = 2000 x 100 x 10 ÷ 25.4 x 16 = sixteenths of an inch ≈ 1,259,843 sixteenths of an inch in 2 kilometres.
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