Refer to the following letter, number, symbol series and answer the question. Counting to be done from left to right. All numbers are single-digit numbers. (Left) P C % Y # 3 5 * E T % 7 D 4 @ 6 K & 2 R # 7 * A (Right) How many such letters are there each of which is immediately preceded by a symbol and also immediately followed by a number?

Refer to the following letter and symbol series and answer the question that follows. Counting is to be done from left to right only. (Left) J @ € * Y % V % C I D % D H $ K © L E £ M C (Right) How many such symbols are there, each of which is immediately preceded by a letter and also immediately followed by a letter?

Refer to the following letter series and answer the question that follows. Counting is to be done from left to right only. (Left) O K A E K J E E K R Y U V J M W O F E O Y A (Right) How many such vowels are there, each of which is immediately preceded by a consonant and also immediately followed by a vowel?