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10. Singular arrangement of sixteen cards.
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10. Singular arrangement of sixteen cards.

Take the four kings, the four queens, the four knaves, and the four tens of a pack, and ask if there be any one in the company who can form a square with them in such a manner that, taken in any direction, from right to left, from the top to


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the bottom, by the diagonal — anyhow, in fact — there will always be in each line a king, queen, knave, and a ten. Everybody will think the thing easy, but it is certain that no one will succeed in doing it. When they `give it up,' take the sixteen cards and arrange
illustration

Fig. 6.

them as shown in fig. 6, when the king, queen, knave, and ten will stand as required.


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