Select the option that can replace the question mark (?) in the following series.
L34E, O46H, R58K, U70N, ?

Refer to the following number series and answer the question that follows (all numbers are single-digit numbers only). Counting to be done from left to right only.
(Left) 9 3 8 9 8 9 3 4 4 4 5 1 2 3 6 8 3 2 9 6 2 9 1 4 9 2 1 (Right)
How many such odd numbers are there, each of which is immediately preceded by an even number and also immediately followed by an even number?

Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. All numbers are single-digit numbers.
(Left) % 4 6 1 * @ 8 $ 7 & Ω 9 # 2 + 3 £ 5 (Right)
How many such symbols are there, each of which is immediately preceded by a number and also immediately followed by another number?

Refer to the following number series and answer the question that follows (all numbers are single-digit numbers only). Counting to be done from left to right only.
(Left) 8 5 1 7 3 5 2 8 7 6 9 8 (Right)
How many such odd numbers are there, each of which is immediately preceded by an odd number and also immediately followed by an even number?

Refer to the following number series and answer the given question (All numbers are single-digit numbers).
(Left) 741249853615467483965239142 (Right)
If all even numbers are removed from the series, which of the following numbers will be seventh from the right?

This question is based on the following five three-digit numbers.
(Left) 783 791 531 563 594 (Right)
(Example: 697 – first digit = 6, second digit = 9 and third digit = 7)
Note: All operations should be performed from left to right.
If the second digit of the largest number is added to the second digit of the smallest number, what will be the result?

Which of the following letter-number groups will logically complete the given series in place of the question mark (?)?
ZSL 18, VOH 29, RKD 40, NGZ 51, JCV 62, ?

This question is based on the five, three-digit numbers given below.
(Left) 156 478 382 642 247 (Right)
(Example- 697 – First digit = 6, second digit = 9 and third digit = 7)
NOTE - All operations to be done from left to right.
If 2 is added to first digit of every number, in how many numbers will the first digit be exactly divisible by the second digit?

This question is based on the following words
(Left) VAN RUG PET BOX (Right)
In each of the words, each vowel is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. In how many letter-clusters thus formed, will no vowel appear?

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) U C & T % 7 D 5 4 @ 6 K & 2 R Y # 3 E * S (Right)
How many such symbols are there each of which is immediately preceded by a letter and also immediately followed by a number?