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Directions to Solve
In each of the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.
Question -
ab _ aa _ bbb _ aaa _ bbba
  • a)
    abba
  • b)
    baab
  • c)
    aaab
  • d)
    abab
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Directions to Solve ...
The series is abb/aaabbb/aaaabbbb/a. Thus the letters are repeated twice, then thrice, then four times and so on.
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Most Upvoted Answer
Directions to Solve ...
Answer:

To solve this question, we need to identify the pattern in the given letter series and determine the missing letters. Let's analyze the given series:

ab _ aa _ bbb _ aaa _ bbb

Identifying the Pattern:
- The series starts with "ab".
- After the first two letters, the pattern seems to repeat. The next two letters are "aa".
- Then, the pattern repeats again with "bbb".
- This is followed by "aaa".
- Finally, the pattern repeats once more with "bbb".

Determining the Missing Letters:
- The first missing letter comes after "ab". Based on the pattern, the next two letters should be "ba".
- The second missing letter comes after "aa". Following the pattern, the next two letters should be "ab".
- The third missing letter comes after "bbb". According to the pattern, the next two letters should be "aa".

Options:
a) abb
b) baab
c) aaab
d) abab

Comparing the Options:
Let's compare each option with the determined missing letters:

a) abb - This option does not match the determined missing letters.

b) baab - This option matches the missing letters we determined: "ba" and "ab".

c) aaab - This option does not match the missing letters.

d) abab - This option does not match the missing letters.

Conclusion:
Based on our analysis, option b) "baab" is the correct alternative as it matches the determined missing letters in the series. Therefore, the correct answer is option b).
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