Puzzle 1
Which is greater, the number of grooves on one side of a vinyl record (if you can remember them!) or the number of days in the year?
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Hint
Think carefully before you answer.
Answer
Days in the year as there is only one groove per side of a vinyl record!
Puzzle 2
Are there more:
… square inches in a piece of carpet 15 yards by 5 yards
or
… feet in a 20-mile walk?
Puzzle Copyright © Kevin Stone
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Hint
There are 12 inches in a foot and 1,760 yards in a mile.
Answer
Feet in a 20-mile walk.
Reasoning
There are 12 inches in a foot, 3 feet in a yard, and 1,760 yards in a mile:
square inches in a piece of carpet 15 yards by 5 yards
(15 x 3 x 12) x (5 x 3 x 12) = 97,200 square inches.
feet in a 20-mile walk
20 x 1760 x 3 = 105,600 feet.
Puzzle 4
I have a jar of sweets.
There are 234 red, 26 blue, 67 green and 63 yellow sweets.
What chance do I have of picking a blue one with my eyes shut?
Puzzle Copyright © Kevin Stone
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Hint
How many sweets in total are there?
Answer
1 in 15.
Reasoning
In total, there are 390 sweets in the jar, and 26 of them are blue.
So the chance of picking blue is 26 in 390 = 1 in 15 = 6.66%.
