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No: 08       December 23, 2020


UNIQUE NUMBERS

UNIQUE NUMBERS

Using each of the digits from 1 to 6 once, you are going to make six-digit numbers. Any three adjacent digits used in one number, can’t be used samely in another number.

How many different numbers can be obtained according to this rule?

Example:
If you have the number 123456, then you can’t have a number containing 123, 234, 345 or 456.


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