Multiple of Repdigit Base minus 1/Examples/4 times 999 base 10
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Example of Multiple of Repdigit Base minus 1
- $4 \times 999$ (base $10$) is equal to $3996$.
Proof
From Multiple of Repdigit Base minus 1:
- the first digit of $4 \times 999$ is $4 - 1 = 3$
- the last digit of $4 \times 999$ is $10 - 4 = 6$
- there are $3 - 1 = 2$ instances of $9$ in between.
Hence:
- $4 \times 999 = 3996$
$\blacksquare$