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Puzzle 65
What letter comes next in this sequence:
E O E R E ?
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Puzzle 66
In the local wood there are a number of trees. On these trees there are a number of birds.
A local bird spotter knows that there are as many birds on each tree as there are trees in the wood, and that there are between 2000 and 2100 birds in total.
How many trees are there in the wood?
Puzzle Copyright © Kevin Stone
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Puzzle 67
What is the minimum number of queens required on a chessboard such that all squares are attacked?
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Puzzle 68
Without using any reference material can you find the hidden countries?
In each case, the letter indicates the first letter of the country in question, the number represents the number of letters in the country.
For example, E7 would be England.
B10 E5 F4 F7 J5 L13 N9 S11 T7 Z6
Puzzle Copyright © Kevin Stone
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