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Q3.X1 is a 3D form generated from the shape X, using certain 3D operations. It has 14 surfaces in total. The same operations are carried out on shape Y. How many surfaces would the resulting 3D form have?
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Q5.What is the shortest distance (in cm) for the red dot to reach the position x? The dot can travel only along the grid lines shown.
CEED2020Q4·nat·Medium
Count the total number of triangles.
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