If 3 is added to each odd digit and 1 is subtracted from each even digit in the number 42514563 , what will be difference between the highest and lowest digits thus formed?

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 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?

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?

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 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?

Refer to the following number series and answer the question that follows. Counting to be done from left to right only. (All numbers are single-digit numbers only.)
(Left) 3 1 2 9 8 4 1 5 4 2 1 5 8 1 3 4 7 5 3 6 5 7 6 6 1 1 2 (Right)
How many such odd numbers are there each of which is immediately preceded by an odd number and also immediately followed by an odd number?

Refer to the following number series and answer the question that follows. Counting to be done from left to right only.
(All numbers are single-digit numbers only.)
(Left) 8 7 4 1 5 7 4 8 6 6 6 2 5 5 8 4 3 9 4 3 1 7 7 5 1 2 5 (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 series and answer the question. (All numbers are single-digit numbers only) (Counting to be done from left to right only).
(Left) 5 4 3 6 7 8 2 1 9 3 3 2 4 5 (Right)
How many such odd numbers are there, each of which is immediately preceded by an even number and immediately followed by an even number?

Refer to the given series and answer the question that follows. (All numbers are single digit numbers only.) Counting to be done from left to right.
(Left) 7 4 3 6 9 3 6 4 5 7 4 5 2 3 8 4 1 5 2 3 7 1 2 5 7 9 8 (Right)
How many such even digits are there, each of which is immediately preceded by an odd digit and also immediately followed by an even digit?