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