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4.
a. yes
b. no
Solution. No: Two different symbols
Answer. b
5.
a. yes
b. no
Solution. Yes: the cube has been rotated by 90 degree toward the south. hiding one of the visible sides while showing a new one.
Answer. a
6.
a. yes
b. no
Solution. Yes: the cube has been rotated by 90 degree toward the north. hiding one of the visible sides while showing a new one.
Answer. a
7.
a. yes
b. no
Solution. Yes: the cube has been rotated by 90 degree toward the west. hiding one of the visible sides while showing a new one.
Answer. a
