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4.

a. yes
b. no

Solution. No­ Clearly two of the symbols are different and as a result we cannot say conclusively if the two symbols are similar.
Answer. b

5.

a. yes
b. no
Solution. No­ even though of the symbols remain same but there orientation does not change while the arrow direction changes in the front face
Answer. b

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 south. hiding one of the visible sides while showing a new one.
Answer. a