Reversal formed by Repdigits of Base minus 1 by Addition and Multiplication/Examples/99
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Example of Reversal formed by Repdigits of Base minus 1 by Addition and Multiplication
| \(\ds 99 + 99\) | \(=\) | \(\ds 198\) | ||||||||||||
| \(\ds 9 \times 99\) | \(=\) | \(\ds 891\) |
Proof
A direct application of Reversal formed by Repdigits of Base minus 1 by Addition and Multiplication:
$\blacksquare$
Sources
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $18$