A) 68
B) 69
C) 70
D) 71
Correct Answer: B
Solution :
In the figure, there are 11 columns containing 4 cubes each, 7 columns containing 3 cubes each and 2 columns containing 2 cubes each. \[\therefore \] Total number of cubes \[=(11\times 4)+(7\times 3)+(2\times 2)\] \[=44+21+4=69.\]
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