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88 What Shall We Do Now? |
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" Ebenezer, do you hear ? " (Ebenezer is the usual name, but a more attractive one would do.) Ebenezer says nothing, but listens attentively to hear who among the company speaks first. The other player repeats the question and still there is no answer. Soon after that some one will perhaps make a remark, and then Ebenezer, having got what he was waiting for, says, " Yes, I hear." " Then leave the room," says the other player, and Ebenezer goes out. The other player then makes a great show of choosing some one to touch, but ends by touching the person who spoke first after the game began. This done, Ebenezer is called in to say who was touched, and every one is puzzled by his knowledge. |
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To guess any number thought of. |
With these thought-reading tricks may be put one or two arithmetical puzzles. Here is a way to find out the number that a person has thought of. Tell him to think of any number, odd or even. (Let us suppose that he thinks of 7.) Then tell him to double it (14), add 6 to it (20), halve it (10), and multiply it by 4 (40). Then ask him how many that makes. He will say 40. You divide this in your mind by 2 (20), subtract 6 (14), divide by 2 again (7), and astonish him by saying that the number of which he thought was 7.
In this case you insist on the number chosen being an even number. Let us suppose it is 8. Tell him to multiply by 3 (24), halve it (12), multiply by 3 again (36), and then to tell you how many times 9 will go into the result. He will say 4. Double this in your mind and tell him that he thought of 8. |
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To guess any even number thought of. |
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To guess the result of a su?n. |
Another trick. Tell the person to think of a number, to double it, add 6 to it, halve it and take away the number first thought of. When this has been done you tell him that 3 remains. If these directions are followed 3 must always remain. Let us take 7 and 1 as examples. Thus 7 doubled is 14 ; add 6 and it is 20 ; halved, it is 10 ; and if the number first thought |
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