Missing letters: abab_b_bcb_dcdcded_d

Consider the following arrangement that has some missing letters: abab_b_bcb_dcdcded_d

The missing letters which complete the arrangement are

1. a, b, c, d
2. a, b, d, e
3. a, c, c, e
4. b, c, d, e

Answer: C

Explanation

The given sequence follows following sequence

a b a b a

b c b c b

c d c d c

d e d e d

So, the missing letters are: a, c, c, e.

• Exam Year: 2020