A) acbd
B) bacd
C) cabd
D) dcba
Correct Answer: D
Solution :
The pattern is \[^{1}{{a}^{2}}b.{{\,}^{2}}{{b}^{1}}a.{{\,}^{1}}{{a}^{2}}{{b}^{3}}c.{{\,}^{3}}{{c}^{2}}{{b}^{1}}a,{{\,}^{1}}{{a}^{2}}{{b}^{3}}{{c}^{4}}d,{{\,}^{4}}{{d}^{3}}{{c}^{2}}{{b}^{1}}a,...\] \[\therefore \] Missing letters \[=dcba.\]You need to login to perform this action.
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