In the previous work, we established representations of numbers numbers from 0 to 1000 using only single digit, i.e., in terms of 1, 2, 3, 4, 5, 6, 7, 8 and 9. This is done only using basic operations: *addition, subtraction, multiplication, potentiation* and *division*. The same work is extended natural numbers up to 10000. Below are links for download the work and some examples.

Link for download the work:

**I.J. TANEJA**, Single Digit Representations of Numbers From 1 to 5000,
**I.J. TANEJA**, Single Digit Representations of Numbers From 5001 to 10000,
**I.J. TANEJA**, Single Digit Representations of Numbers From 10001 to 15000;
**I.J. TANEJA**, Single Digit Representations of Numbers From 15001 to 20000;

**Examples:**

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