What Are Variables? — Definition & Examples

While planning his farm layout, Farmer John notices a pattern.

• The number of strawberry bushes in $10$ rows of $20$ each is the same as the number in $20$ rows of $10$ each.
• The number of apple trees in $13$ columns of $17$ each is the same as the number in $17$ columns of $13$ each.
• The number of carrots in $45$ groups of $24$ each is the same as the number in $24$ groups of $45$ each.