Читать книгу Endless Amusement - Unknown - Страница 89
To tell a Person any Number he may privately fix on.
ОглавлениеWhen the person has fixed on a number, bid him double it and add four to that doubling; then multiply the whole by 5; to the product let him add 12, and multiply the amount by 10. From the total of all this, let him deduct 320, and tell you the remainder; from which, if you cut off the two last figures, the number that remains will be what he fixed upon. For instance,
| Suppose the number chosen is | 7 |
| Which doubled | 14 |
| Add 4 to it, and it will make | 18 |
| Multiply 18 by 5, gives | 90 |
| To which add 12, is | 102 |
| Multiply that by 10, makes | 1020 |
| From which deducting 320, the remainder is | 700 |
| And by striking off the two ciphers, it becomes the number thought on | 7 |
