Question

baa_a_a_bab_aba (which letters are appropriate for following to fill the blank

Answer 1

baa_a_a_bab_aba
If we divide two into a group, the answer is bbba
ba|a(b)|a(b)|a(b)|ba|b(a)|ab|a
If we divide three into a group from thr right, the answer is abaa
baa|(a)a(b)|a(a)b|ab(a)|aba
If we divide three into a group from the left, the answer is baaa
baa|(b)a(a)|a(a)b|ab(a)|aba
Note: Actually the answer of the question, have to be deducted from options given.
The method used for solving these type of questions is grouping.