Reversal formed by Repdigits of Base minus 1 by Addition and Multiplication/Examples/9
Jump to navigation
Jump to search
Example of Reversal formed by Repdigits of Base minus 1 by Addition and Multiplication
| \(\ds 9 + 9\) | \(=\) | \(\ds 18\) | ||||||||||||
| \(\ds 9 \times 9\) | \(=\) | \(\ds 81\) |
Proof
A direct application of Reversal formed by Repdigits of Base minus 1 by Addition and Multiplication:
$\blacksquare$
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $18$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $18$