4840/Historical Note
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Historical Note on $4840$ (Four Thousand, Eight Hundred and Forty)
$4840 = 22 \times 220$ is the number of square yards in an acre.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $4840$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $4840$