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Chapter 1 of 12 • Page 1 of 248🔒 Protected PDF • Watermarked
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Each vowel in the word 'STATION' is changed to the letter immediately preceding it in the English alphabetical order, and each consonant is changed to the letter immediately following it in the English alphabetical order. Which of the following letters will appear exactly twice in the new group of letters formed?
T
U
B
O
T
Map letters to numbers or positions quickly; focus only on vowels first as they move backward and consonants move forward.
Map letters to numbers or positions quickly; focus only on vowels first as they move backward and consonants move forward.
Mapping the word STATION
Break down the word: S (consonant), T (consonant), A (vowel), T (consonant), I (vowel), O (vowel), N (consonant).
Applying transformation rules
Consonants: S+1=T, T+1=U, T+1=U, N+1=O. Vowels: A-1=Z, I-1=H, O-1=N.
Collating the new sequence
The transformed letters are: T, U, Z, U, H, N, O. Counting occurrences: T occurs once, U occurs twice, Z occurs once, H occurs once, N occurs once, O occurs once.
A is incorrect as T appears only once. C is incorrect as B does not appear in the sequence. D is incorrect as O appears only once.
B is correct because the letter U appears twice in the transformed sequence T, U, Z, U, H, N, O.
When asked for letters that appear 'exactly twice', write down the full transformed sequence immediately to avoid missing a character due to mental calculation errors.