Question : Directions: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
ab_cba_bcc_aabccb_ _bccba
Option 1: abbac
Option 2: ccaab
Option 3: abcab
Option 4: cabaa
Correct Answer: cabaa
Solution :
Given:
ab_cba_bcc_aabccb_ _bccba
To fill the series we have to divide the series – ab_cba / _bcc_a / abccb_ / _bccba
Let's check the option –
First option:
abbac; ab
a
cba /
b
bcc
b
a / abccb
a
/
c
bccba (No repeated pattern has been found.)
Second option:
ccaab; ab
c
cba /
c
bcc
a
a / abccb
a
/
b
bccba (No repeated pattern has been found.)
Third option:
abcab; ab
a
cba /
b
bcc
c
a / abccb
a
/
b
bccba (No repeated pattern has been found.)
Fourth option:
cabaa; ab
c
cba /
a
bcc
b
a / abccb
a
/
a
bccba (abccba is repeated in the series.)
So, the series becomes→abccbaabccbaabbcbaabccba. Hence, the fourth option is correct.
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