
Dr. C. H. Laws. sums56@yahoo.com.tw 羅緝熙醫生 This is an incredible mathematic game, that I played with my professor in the SUMS, in the year 1951  1952. I was a first year medical student in that time. L. = Dr. C. H. Laws P. = Professor or Player L. Professor, please choose a natural number of any size, write it down on the paper and don't let me know.
L. Multiply this number by 21.
L. " 6 " is the first perfect number, isn't it?
L. The factors of 6 are 1, 2, 3 ?
L. Please add the sum of any combination of them to the product above.
L. Then multiply the sum by 1 5 8 5 7 1 2 7.
L. Please hide five digits of the product marked ( ? ) below and let me know the rest.
L. O. K.. Let us have a break. = = = = =
L. Multiply this number by the number by the hidden digits in order.
L. Multiply the same number by 1 5 2 6 2 0 9 please?
L. Add them up please.
L. Hide these 5 digits marked (?) and let me know the rest please.
P. Here it is.
Can you find out the unknown figures of A. to K. ?
CHALLENGE
100 times of a natural number minus the natural number itself, then the difference multiply by 174603. The product is 7 ? 9 6 3 ? 9 2 ? ? 3 6 ? 9 7 6 8 or 7 a 9 6 3 b 9 2 c d 3 6 e 9 7 6 8 . ( 5 digits are missing or hidden ) Another natural number multiply by 3123300 and the number formed by a b c d e in order (10000a + 1000b + 100c + 10d + e ) respectively. Add the two products up and the sum is 1 8 ? 9 8 3 ? 9 6 ? 2 ? 5 ? 3 5 6 . ( 5 digits are missing or hidden ) What are these two natural numbers? Using no computer, the first one who can give me the correct answer, I will reward him or her a certificate. In the Bible, there is a number, the number of the beast ( 666 ) is even more difficult to calculate. "This calls for wisdom: let him who has understanding reckon the number of the beast, for it is a human number, its number is six hundred and sixtysix." Revelation
The website http://english.sdaglobal.org/ may help you to study this extremely difficult question.

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