Below some clock dials where the numbers from 1 to 12 are written in an original way.

You can print the pdf file and insert the image inside a real clock.

You are also challenged to make your own mathematical clock!

With basic arithmetic operations, and the floor and ceiling functions.

(Download the PDF.)

With basic arithmetic operations only.

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Only the prime numbers are displayed.

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The dot stands for '1', the bar stands for '5'.

(Download the PDF.)

Only the digits 1,2, and 3 are used (exactly once and in this order). With the factorial and the floor function.

With some inspiration from As easy as 1-2-3.

(Download the PDF.)

Only the digit 3 is used, and exactly 3 times. With the factorial, and a repeating decimal.

With some inspiration from Immer drei mal drei.

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**The e-clock.**Based on the Euler's number e.

(Download the PDF.)**The 1-clock.**Based on the number 1.

(Download the PDF.)**The 2-clock.**Based on the number 2.

(Download the PDF.)**The 3-clock.**Based on the number 3.

(Download the PDF.)**The 4-clock.**Based on the number 4.

(Download the PDF.)**The 5-clock.**Based on the number 5.

(Download the PDF.)**The 6-clock.**Based on the number 6.

(Download the PDF.)**The 7-clock.**Based on the number 7.

(Download the PDF.)**The 8-clock.**Based on the number 8.

(Download the PDF.)**The 9-clock.**Based on the number 9.

(Download the PDF.)