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) 3 5 6 3 4 6 4 3 1 5 7 6 8 6 3 1 3 6 7 8 9 7 5 (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) THREE