Direction: These questions are based on letter series. In each of these series, some letters are missing. Select the correct alternative.
- 
					 a_c_ba_ca_cb
- 
                        - abcc
- acba
- bcaa
- bcba
 
Correct Option: D
The sequence is made of repetition of abc in different order, so identify the missing alphabet in abc . 
second word is reverse of first word, similar way 4th word is reverse of 3r word.
By option (d),
abc/cba/bca/acb ⇒ bcba 
 
	