A) 15
B) 18
C) 19
D) 16
Correct Answer: A
Solution :
In the figure, there are 1 columns containing 3 cubes each, 4 columns containing 2 cubes each and 4 columns containing 1 cube each. \[\therefore \]Total number of cubes \[=\text{3}\times \text{1}+\text{2}\times \text{4}+\text{1}\times \text{4}\]\[=\text{3}+\text{8}+\text{4}=\text{15}\]
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