Correct Answer: (1, 5, 9); (3, 4, 8); (2, 6, 7)
Explanation:
As per the given series of figures, which can be classified as:-
Figures 1, 5, 9 ⇒ Consist only of curved lines.
Figures 3, 4, 8 ⇒ Consist of both the straight and curved lines.
Figures 2, 6, 7 ⇒ Consist only of straight lines.
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