perplexus.info :: Numbers : All Combos 3

All Combos 3 (Posted on 2024-05-14)

A positive integer N contains each 2-digit combination exactly once:
00, 01, ..., 99.

(A) What is the smallest number of digits N could have?
(B) What is the largest number of digits N could have?
(C) What is the smallest possible value of N?
(D) What is the largest possible value of N?

(no leading zeros)

No Solution Yet Submitted by Larry

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Puzzle Thoughts to Part A

| Comment 1 of 5

The required smallest number of digis is 200.

Posted by K Sengupta on 2024-05-15 02:24:22

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