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Refer to the following letter series and answer the question that follows. Counting to be done from left to right only.
How many such vowels are there, each of which is immediately preceded by a consonant and also immediately followed by a consonant?
Two
Three
One
None
Three
Scan only vowels (A, E, I, O, U) in the series and check the immediate left and right letters; if both are consonants, count them.
Scan only vowels (A, E, I, O, U) in the series and check the immediate left and right letters; if both are consonants, count them.
Identify Vowels
List all vowels (A, E, I, O, U) present in the sequence: NGTXR K H V (A) W Z W (U) BR (E) CFK L Z. The vowels are A, U, E.
Check C-V-CPattern
Check neighbors for each vowel: 1) H-A-W (H is consonant, W is consonant) → Match. 2) W-U-B (W is consonant, B is consonant) → Match. 3) R-E-C (R is consonant, C is consonant) → Match.
Count Matches
The patterns H-A-W, W-U-B, and R-E-C satisfy the condition. Total count = 3.
A: Two is wrong because we found three occurrences. C: One is wrong because we found three occurrences. D: None is wrong because we found three occurrences.
B is correct because the series contains exactly three vowels (A, U, E) that are both preceded and followed by consonants (H-A-W, W-U-B, R-E-C).
In any sequence question, always mark the target letters first to avoid missing any instances due to scanning fatigue.