Select the term from among the given Options that can replace the question mark (?) in the following series.
2A, 3C, 5F, 7J, 11O, ?

How many even numbers are there in the following number sequence which are preceded and succeeded by an odd number?
1 2 3 3 2 1 4 2 3 1 4 2 2 3 3 1 4 1

Find the missing term in the given series:
G13, H15, I17, ____ , K21

Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left) 7 @ > 5 # ? \ + * 2 > ? > $ 4 % % $ 7 4 2 (Right)
How many such symbols are there, each of which is immediately preceded by another symbol and also immediately followed by a number?

Refer to the following number, symbol series and answer the question that follow. Counting to be done from left to right only.
(Left) ? 7 3 ? 2 5 3 ^ # + * @ 2 7 # & 5 2 * # 2 (Right)
How many such symbols are there each of which is immediately preceded by a number and also immediately followed by a number?

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
HMI 3, JOK 6, LQM 9, NSO 12, ?

Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
(Note: all numbers are single digit numbers only.)
(Left) 1 & 9 6 > 7 5 * 7 + 5 ^ 7 0 * 4 % $ (Right)
How many such symbols are there, each of which is immediately preceded by a number and also immediately followed by a number?

Refer to the following letter sequence and answer the question :
(Left) S B T M R E S I C Z Y O W A P D F H G U L (Right)
Which letter is fifth to the right of the twelfth letter from your right end of the given sequence ?

If the first half of the following sequence is made second half, which letter/number/symbol will come at seventh place towards the left of the fifth place from the right end?
L, X, J, K, I, L, U, A, 5, 9, H, 2, T, %, 9, @, 1, #

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
UKM 1, SML 3, QOK 9, OQJ 27, ?

Refer to the following letter and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left) R L Z T @ $ O D U %W N # * K X V £ Y A & Q P S (Right)
How many such letters are there that are immediately preceded by a symbol and also immediately followed by another letter?