Refer to the following letter series and answer the question. Counting to be done from left to right only. (Left) R F D Q A L M F W S O U T A L E T G D V B T K U (Right) How many such consonants are there each of which is immediately preceded by a vowel and also immediately followed by a vowel?
Two
The vowels are A, E, I, O and U. Number the series from the left: 1 R, 2 F, 3 D, 4 Q, 5 A, 6 L, 7 M, 8 F, 9 W, 10 S, 11 O, 12 U, 13 T, 14 A, 15 L, 16 E, 17 T, 18 G, 19 D, 20 V, 21 B, 22 T, 23 K, 24 U.
The vowels stand at places 5, 11, 12, 14, 16 and 24 (A, O, U, A, E and U). A consonant that has a vowel on both sides must sit between two vowel places that are exactly two apart, i.e. at place 13 (between 12 and 14) or place 15 (between 14 and 16).
| Place | Letter | Preceded by | Followed by | Qualifies? |
| 13 | T | U – vowel | A – vowel | Yes |
| 15 | L | A – vowel | E – vowel | Yes |
Every other consonant has at least one consonant (or the end of the series) next to it; for example L at place 6 is followed by M, and S at place 10 is preceded by W.
Therefore the qualifying consonants are T in the group U T A and L in the group A L E, so the count is 2.
Check: the only vowel pairs two places apart are (12, 14) and (14, 16); the letters between them, T and L, are consonants, so exactly 2 consonants satisfy both conditions.
Hence, Two.
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Important Questions from Letter Based
Select the related letters from the given alternatives:
JOKE : GLHB : : RISK : ?Select the related letters from the given alternatives:
MAN : PDQ : : WAN : ?In the following question, select the related letter/letters from the given alternatives.
ACE : KMO : : BDF : ?Select the option that is related to the third term in the same way as the second term is related to the first term.
JMP : HON :: ADG : ?
Select the pair that is related on the same basis to the pair given in the question.
MTA : JQX : GNU :: ?
