Strings of a’s whose length is a perfect square.
A. (A) and (B) only
B. (A), (B) and (C) only
C. (B), (C) and (D) only
D. (B) and (D) only
Answer:B
Strings of a’s whose length is a perfect square.
A. (A) and (B) only B. (A), (B) and (C) only C. (B), (C) and (D) only D. (B) and (D) only