Question

There is a certain number of articles in the warehouse. Each article is given distinct codes which is either a single digit number or two consecutive single digit numbers. Find the least number of digits to be used if there are 10 articles in the warehouse.

A 5 Correct Answer Incorrect Answer
B 6 Correct Answer Incorrect Answer
C 4 Correct Answer Incorrect Answer
D 3 Correct Answer Incorrect Answer
E 9 Correct Answer Incorrect Answer

Solution

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