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A grid has three rows and five columns of equal squares. How many squares of all sizes does it contain?

Competition practiceCounting Figures

A15
B26
C23
D30

Step-by-Step Solution

Size 1:

3 \times 5 = 15

. Size 2:

2 \times 4 = 8

. Size 3:

1 \times 3 = 3

. Total

15 + 8 + 3 = 26

.

Answer: B) 26

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