. In the given sequence, some letters are
missing. Which of the given options can
fill the blanks in the correct order from
left to right?
ab_ab_aaa_bbaaa_bbbb
(1) abab (2) abba
(3) aabb (4) baba
missing. Which of the given options can
fill the blanks in the correct order from
left to right?
ab_ab_aaa_bbaaa_bbbb
(1) abab (2) abba
(3) aabb (4) baba