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How many even numbers are there which are immediately followed by an odd number and also immediately preceded by an odd number in the sequence?
8 4 7 6 5 3 2 5 1 6 4 3 2 6 7 9 8 5
  • a)
    3
  • b)
    4
  • c)
    2
  • d)
    15
Correct answer is option 'A'. Can you explain this answer?
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Given sequence: 8 4 7 6 5 3 2 5 1 6 4 3 2 6 7 9 8 5

To find the number of even numbers that are immediately preceded and followed by an odd number, we need to scan through the sequence and check for each even number if it satisfies the given condition.

Steps to solve the problem:

1. Scan through the sequence from left to right.
2. For each even number, check if it is immediately preceded and followed by an odd number.
3. If the condition is satisfied, count the even number.
4. Return the total count of even numbers.

Scanning through the sequence:

8 4 7 6 5 3 2 5 1 6 4 3 2 6 7 9 8 5

We can see that there are only three even numbers that satisfy the condition, which are 6, 6, and 8.

Therefore, the total count of even numbers that are immediately preceded and followed by an odd number in the sequence is 3.

Hence, the correct answer is option 'A'.
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How many even numbers are there which are immediately followed by an odd number and also immediately preceded by an odd number in the sequence?8 4 7 6 5 3 2 5 1 6 4 3 2 6 7 9 8 5a)3b)4c)2d)15Correct answer is option 'A'. Can you explain this answer?
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