Hanky Panky

by Wiljalba Frikell

TO TELL THE SPOTS ON ALL THE BOTTOM CARDS OF SEVERAL HEAPS.

Arrange each heap of cards in such a manner that the spots on the bottom one, added to the cards above it, may always amount to twelve; continue to make as many heaps as possible, in the manner above prescribed, and place the remaining cards on one side. Then separate in your mind four heaps, and multiply the heaps which remain, after these are deducted, by 13; this product, added to the number of cards, will be that of the spots required. We give the solution of this problem by an analysis in “To Guess the Spots on a Card,” p. [253].