Count the Squares in a 10 by 5 Grid: What Number Am I?

Upon reviewing the grid representation, we notice that each individual small square represents a single unit (1).

Steps:

• Start by identifying rows consisting of 10 squares each.
• Since each box represents a single unit, count the complete rows and any additional squares in incomplete rows.
• In the current diagram, there are a total of 5 complete rows each containing 10 squares, summing up to $5 \times 10 = 50$.

Therefore, the number represented by this graphical arrangement is $50$.

Examining the choices presented, the correct answer is:

$50$