Puzzle 109
Which one of these letters is the odd one out?
Puzzle Copyright © Kevin Stone
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Hint
These are all Greek letters.
Answer
θ (theta).
Reasoning
These are all Greek letters, and they are:
xi, chi, theta, psi, pi, phi
They all sound similar to each other, except θ.
Puzzle 110
Which word in the English language is …
… most often pronounced incorrectly?
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Puzzle 111
School Reunion '62 – All Logic Puzzles
During a recent school reunion, four friends were discussing their starting salaries.
The salaries in question were, 8, 10, 12 and 14 thousand pounds per year.
The MP earned the most.
Alex earned more than Billie and the doctor earned more than Drew, the vet.
Billie, the lawyer, did not start on £10,000 nor did Drew.
And Chris couldn't remember.
Can you determine who has which job and their starting salaries?
Puzzle Copyright © Kevin Stone
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Answer
Name Profession Salary
Alex MP £14,000
Billie lawyer £12,000
Chris doctor £10,000
Drew vet £ 8,000
Puzzle 112
A large freshwater reservoir has two types of drainage system. Small pipes and large pipes.
6 large pipes, on their own, can drain the reservoir in 12 hours.
6 small pipes, on their own, can drain the reservoir in 18 hours.
How long will 6 large pipes and 6 small pipes take to drain the reservoir?
Puzzle Copyright © Kevin Stone
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Hint
How many reservoirs can each drain in 36 hours?
Answer
7 hours and 12 minutes.
Reasoning
We can use a time that 12 hours and 18 hours both fit in to, in 36 hours:
6 large pipes can drain 3 reservoirs.
6 small pipes can drain 2 reservoirs.
Therefore, together, 6 large and 6 small pipes can drain 5 reservoirs.
36 hours ÷ 5 = 7.2 hours for one reservoir.
7.2 hours = 7 hours and 12 minutes for one reservoir.