A) 50
B) 54
C) 52
D) 48
Correct Answer: C
Solution :
A rectangle has 4 corners. 13 rectangles will have \[\text{13 }\times \text{ 4}\] corners = 52 corners \[\begin{align} & \underline{\begin{matrix} T & O \\ ^{1}1 & 3 \\ \times & 4 \\ \end{matrix}} \\ & \underline{\,5\,\,\,\,\,\,\,\,\,2} \\ \end{align}\]
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