21) In each question, out of four alternative figures marked (1), (2), (3), and (4), three are similar in a certain manner.However, one figure is not like the other three. Choose the figure which is different from the rest.
A) 1
B) 2
C) 3
D) 4
22) 
A) 1
B) 2
C) 3
D) 4
23) 
A) 1
B) 2
C) 3
D) 4
24) 
A) 1
B) 2
C) 3
D) 4
25) 
A) 1
B) 2
C) 3
D) 4
26) 
A) 1
B) 2
C) 3
D) 4
27) 
A) 1
B) 2
C) 3
D) 4
28) 
A) 1
B) 2
C) 3
D) 4
29) 
A) 1
B) 2
C) 3
D) 4
30) 
A) 1
B) 2
C) 3
D) 4