The book A Certain Ambiguity is subtitiled A mathematical Novel. It is a sutiable subtitle as a novel which succedes in telling stories with mathematical overtones and ideas.
 
One mathematical idea has the following method and result:-

• Type any 3 digits into a calculator.
   
•  Then type the same 3 digits again.
   
• This is now a 6 digit number;
   
• This 6 digit number can now be exactly divided by 13 to give new whole number.
   
• Divide this new number by 7 to give another new number.
   
• By dividing this latest number by 7 and as a result it will give the original 3 digit number.

A clue is that 23 x 11 x7 = 1001.
 
From the novel A Certain Ambiguity.
 
(c) Compiled by B V & T M Wood.
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