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B
13
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C
14
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D
15
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Solution
The correct option is C 14 The total number of layers of cubes are 3. Total number of cubes in the top layer = 1 Total number of cubes in the second layer = 3 (1 is hidden) Total number of cubes in the lower layer = 5 (4 is hidden) So total number of cubes = 1 + 4 + 9 = 14.